85975290 has 64 divisors (see below), whose sum is σ = 242766720. Its totient is φ = 21576960.

The previous prime is 85975277. The next prime is 85975303. The reversal of 85975290 is 9257958.

It is a happy number.

85975290 is a `hidden beast` number, since 8 + 597 + 52 + 9 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (85975277) and next prime (85975303).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4776 + ... + 13955.

It is an arithmetic number, because the mean of its divisors is an integer number (3793230).

Almost surely, 2^85975290 is an apocalyptic number.

85975290 is an abundant number, since it is smaller than the sum of its proper divisors (156791430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85975290 is a wasteful number, since it uses less digits than its factorization.

85975290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18764 (or 18758 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 85975290 is about 9272.2861258699. The cubic root of 85975290 is about 441.3582169766.

The spelling of 85975290 in words is "eighty-five million, nine hundred seventy-five thousand, two hundred ninety".