157696613 has 2 divisors, whose sum is σ = 157696614. Its totient is φ = 157696612.

The previous prime is 157696589. The next prime is 157696639. The reversal of 157696613 is 316696751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156925729 + 770884 = 12527^2 + 878^2 .

It is a cyclic number.

It is not a de Polignac number, because 157696613 - 2²² = 153502309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157696213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78848306 + 78848307.

It is an arithmetic number, because the mean of its divisors is an integer number (78848307).

Almost surely, 2^157696613 is an apocalyptic number.

It is an amenable number.

157696613 is a deficient number, since it is larger than the sum of its proper divisors (1).

157696613 is an equidigital number, since it uses as much as digits as its factorization.

157696613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 44.

The square root of 157696613 is about 12557.7312043219. The cubic root of 157696613 is about 540.2657733788.

It can be divided in two parts, 1576 and 96613, that added together give a palindrome (98189).

The spelling of 157696613 in words is "one hundred fifty-seven million, six hundred ninety-six thousand, six hundred thirteen".