85815916 has 6 divisors (see below), whose sum is σ = 150177860. Its totient is φ = 42907956.

The previous prime is 85815893. The next prime is 85815923. The reversal of 85815916 is 61951858.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10726986 + ... + 10726993.

Almost surely, 2^85815916 is an apocalyptic number.

It is an amenable number.

85815916 is a deficient number, since it is larger than the sum of its proper divisors (64361944).

85815916 is a wasteful number, since it uses less digits than its factorization.

85815916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21453983 (or 21453981 counting only the distinct ones).

The product of its digits is 86400, while the sum is 43.

The square root of 85815916 is about 9263.6880344709. The cubic root of 85815916 is about 441.0853303001.

The spelling of 85815916 in words is "eighty-five million, eight hundred fifteen thousand, nine hundred sixteen".