85290657 has 4 divisors (see below), whose sum is σ = 113720880. Its totient is φ = 56860436.

The previous prime is 85290643. The next prime is 85290659. The reversal of 85290657 is 75609258.

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 85290657 - 2⁶ = 85290593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85290659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14215107 + ... + 14215112.

It is an arithmetic number, because the mean of its divisors is an integer number (28430220).

Almost surely, 2^85290657 is an apocalyptic number.

It is an amenable number.

85290657 is a deficient number, since it is larger than the sum of its proper divisors (28430223).

85290657 is a wasteful number, since it uses less digits than its factorization.

85290657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28430222.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 85290657 is about 9235.2940938554. The cubic root of 85290657 is about 440.1835614956.

The spelling of 85290657 in words is "eighty-five million, two hundred ninety thousand, six hundred fifty-seven".