85680764 has 12 divisors (see below), whose sum is σ = 161475384. Its totient is φ = 39544944.

The previous prime is 85680737. The next prime is 85680821. The reversal of 85680764 is 46708658.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823802 + ... + 823905.

It is an arithmetic number, because the mean of its divisors is an integer number (13456282).

Almost surely, 2^85680764 is an apocalyptic number.

It is an amenable number.

85680764 is a deficient number, since it is larger than the sum of its proper divisors (75794620).

85680764 is a wasteful number, since it uses less digits than its factorization.

85680764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647724 (or 1647722 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 85680764 is about 9256.3904412033. The cubic root of 85680764 is about 440.8536526580.

The spelling of 85680764 in words is "eighty-five million, six hundred eighty thousand, seven hundred sixty-four".