86665716 has 36 divisors (see below), whose sum is σ = 219492000. Its totient is φ = 28833168.

The previous prime is 86665703. The next prime is 86665721. The reversal of 86665716 is 61756668.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19555 + ... + 23573.

It is an arithmetic number, because the mean of its divisors is an integer number (6097000).

Almost surely, 2^86665716 is an apocalyptic number.

It is an amenable number.

86665716 is an abundant number, since it is smaller than the sum of its proper divisors (132826284).

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

86665716 is a wasteful number, since it uses less digits than its factorization.

86665716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4628 (or 4623 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 86665716 is about 9309.4423033821. The cubic root of 86665716 is about 442.5365133137.

The spelling of 86665716 in words is "eighty-six million, six hundred sixty-five thousand, seven hundred sixteen".