85704507 has 32 divisors (see below), whose sum is σ = 145548800. Its totient is φ = 48825504.

The previous prime is 85704499. The next prime is 85704529. The reversal of 85704507 is 70540758.

85704507 is a `hidden beast` number, since 85 + 70 + 4 + 507 = 666.

It is not a de Polignac number, because 85704507 - 2³ = 85704499 is a prime.

It is a super-2 number, since 2×85704507² = 14690525040226098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85704587) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102969 + ... + 103797.

It is an arithmetic number, because the mean of its divisors is an integer number (4548400).

Almost surely, 2^85704507 is an apocalyptic number.

85704507 is a deficient number, since it is larger than the sum of its proper divisors (59844293).

85704507 is a wasteful number, since it uses less digits than its factorization.

85704507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392 (or 1386 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 85704507 is about 9257.6728717319. The cubic root of 85704507 is about 440.8943705550.

The spelling of 85704507 in words is "eighty-five million, seven hundred four thousand, five hundred seven".