85664907 has 12 divisors (see below), whose sum is σ = 126073584. Its totient is φ = 56032080.

The previous prime is 85664899. The next prime is 85664951. The reversal of 85664907 is 70946658.

It is not a de Polignac number, because 85664907 - 2³ = 85664899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85664807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89319 + ... + 90272.

It is an arithmetic number, because the mean of its divisors is an integer number (10506132).

Almost surely, 2^85664907 is an apocalyptic number.

85664907 is a deficient number, since it is larger than the sum of its proper divisors (40408677).

85664907 is a wasteful number, since it uses less digits than its factorization.

85664907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179650 (or 179647 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 85664907 is about 9255.5338581845. The cubic root of 85664907 is about 440.8264546136.

The spelling of 85664907 in words is "eighty-five million, six hundred sixty-four thousand, nine hundred seven".