85006664 has 32 divisors (see below), whose sum is σ = 169785720. Its totient is φ = 39760896.

The previous prime is 85006639. The next prime is 85006673. The reversal of 85006664 is 46660058.

It can be written as a sum of positive squares in 4 ways, for example, as 72965764 + 12040900 = 8542^2 + 3470^2 .

It is a super-2 number, since 2×85006664² = 14452265848817792, which contains 22 as substring.

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, 21722 + ... + 25334.

Almost surely, 2^85006664 is an apocalyptic number.

It is an amenable number.

85006664 is a deficient number, since it is larger than the sum of its proper divisors (84779056).

85006664 is a wasteful number, since it uses less digits than its factorization.

85006664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3809 (or 3805 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 85006664 is about 9219.9058563523. The cubic root of 85006664 is about 439.6944572971.

The spelling of 85006664 in words is "eighty-five million, six thousand, six hundred sixty-four".