85413657 has 16 divisors (see below), whose sum is σ = 130286592. Its totient is φ = 48758160.

The previous prime is 85413637. The next prime is 85413659. The reversal of 85413657 is 75631458.

It is a de Polignac number, because none of the positive numbers 2^k-85413657 is a prime.

It is a super-2 number, since 2×85413657² = 14590985604227298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85413659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32482 + ... + 35012.

It is an arithmetic number, because the mean of its divisors is an integer number (8142912).

Almost surely, 2^85413657 is an apocalyptic number.

It is an amenable number.

85413657 is a deficient number, since it is larger than the sum of its proper divisors (44872935).

85413657 is a wasteful number, since it uses less digits than its factorization.

85413657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4148.

The product of its digits is 100800, while the sum is 39.

The square root of 85413657 is about 9241.9509304043. The cubic root of 85413657 is about 440.3950601285.

The spelling of 85413657 in words is "eighty-five million, four hundred thirteen thousand, six hundred fifty-seven".