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68927101 = 83830447
BaseRepresentation
bin1000001101110…
…11111001111101
311210200212012121
410012323321331
5120121131401
610501202541
71464604435
oct406737175
9153625177
1068927101
11359a8a51
121b100451
1311384389
1492232c5
1560b7ca1
hex41bbe7d

68927101 has 4 divisors (see below), whose sum is σ = 69757632. Its totient is φ = 68096572.

The previous prime is 68927099. The next prime is 68927119. The reversal of 68927101 is 10172986.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10172986 = 25086493.

It is a cyclic number.

It is not a de Polignac number, because 68927101 - 21 = 68927099 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 (68927141) 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, 415141 + ... + 415306.

It is an arithmetic number, because the mean of its divisors is an integer number (17439408).

Almost surely, 268927101 is an apocalyptic number.

It is an amenable number.

68927101 is a deficient number, since it is larger than the sum of its proper divisors (830531).

68927101 is an equidigital number, since it uses as much as digits as its factorization.

68927101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830530.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 68927101 is about 8302.2346991638. The cubic root of 68927101 is about 410.0120976006.

The spelling of 68927101 in words is "sixty-eight million, nine hundred twenty-seven thousand, one hundred one".

Divisors: 1 83 830447 68927101