85971508 has 24 divisors (see below), whose sum is σ = 173880000. Its totient is φ = 36429888.

The previous prime is 85971497. The next prime is 85971517. The reversal of 85971508 is 80517958.

It is a super-2 number, since 2×85971508² = 14782200375588128, which contains 22 as substring.

It is a congruent number.

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, 14758 + ... + 19741.

It is an arithmetic number, because the mean of its divisors is an integer number (7245000).

Almost surely, 2^85971508 is an apocalyptic number.

It is an amenable number.

85971508 is an abundant number, since it is smaller than the sum of its proper divisors (87908492).

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

85971508 is a wasteful number, since it uses less digits than its factorization.

85971508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34599 (or 34597 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 43.

The square root of 85971508 is about 9272.0821825521. The cubic root of 85971508 is about 441.3517451897.

The spelling of 85971508 in words is "eighty-five million, nine hundred seventy-one thousand, five hundred eight".