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8700013 = 71242859
BaseRepresentation
bin100001001100…
…000001101101
3121101000011201
4201030001231
54211400023
6510245501
7133643320
oct41140155
917330151
108700013
114a024a3
122ab6891
131a57c4a
1412267b7
15b6cbad
hex84c06d

8700013 has 4 divisors (see below), whose sum is σ = 9942880. Its totient is φ = 7457148.

The previous prime is 8700011. The next prime is 8700019. The reversal of 8700013 is 3100078.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8700013 - 21 = 8700011 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 (8700011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621423 + ... + 621436.

It is an arithmetic number, because the mean of its divisors is an integer number (2485720).

Almost surely, 28700013 is an apocalyptic number.

It is an amenable number.

8700013 is a deficient number, since it is larger than the sum of its proper divisors (1242867).

8700013 is a wasteful number, since it uses less digits than its factorization.

8700013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242866.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 8700013 is about 2949.5784444561. The cubic root of 8700013 is about 205.6711140620.

The spelling of 8700013 in words is "eight million, seven hundred thousand, thirteen".

Divisors: 1 7 1242859 8700013