85906690 has 16 divisors (see below), whose sum is σ = 158228928. Its totient is φ = 33563376.

The previous prime is 85906669. The next prime is 85906703. The reversal of 85906690 is 9660958.

It is a super-2 number, since 2×85906690² = 14759918773512200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99462 + ... + 100321.

It is an arithmetic number, because the mean of its divisors is an integer number (9889308).

Almost surely, 2^85906690 is an apocalyptic number.

85906690 is a deficient number, since it is larger than the sum of its proper divisors (72322238).

85906690 is a wasteful number, since it uses less digits than its factorization.

85906690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199833.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 85906690 is about 9268.5861920791. The cubic root of 85906690 is about 441.2407986268.

The spelling of 85906690 in words is "eighty-five million, nine hundred six thousand, six hundred ninety".