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103660973 = 137973921
BaseRepresentation
bin1100010110110…
…11110110101101
321020001112010022
412023123312231
5203014122343
614141451525
72366050403
oct613336655
9236045108
10103660973
1153572029
122a870ba5
1318625c70
14daa5473
159179568
hex62dbdad

103660973 has 4 divisors (see below), whose sum is σ = 111634908. Its totient is φ = 95687040.

The previous prime is 103660961. The next prime is 103660981. The reversal of 103660973 is 379066301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 379066301 = 647585883.

It can be written as a sum of positive squares in 2 ways, for example, as 6086089 + 97574884 = 2467^2 + 9878^2 .

It is a cyclic number.

It is not a de Polignac number, because 103660973 - 24 = 103660957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103660943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3986948 + ... + 3986973.

It is an arithmetic number, because the mean of its divisors is an integer number (27908727).

Almost surely, 2103660973 is an apocalyptic number.

103660973 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

103660973 is a deficient number, since it is larger than the sum of its proper divisors (7973935).

103660973 is an equidigital number, since it uses as much as digits as its factorization.

103660973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7973934.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 103660973 is about 10181.4032922775. The cubic root of 103660973 is about 469.7553774558.

The spelling of 103660973 in words is "one hundred three million, six hundred sixty thousand, nine hundred seventy-three".

Divisors: 1 13 7973921 103660973