86687772 has 12 divisors (see below), whose sum is σ = 202271496. Its totient is φ = 28895920.

The previous prime is 86687717. The next prime is 86687789. The reversal of 86687772 is 27778668.

It is a tau number, because it is divible by the number of its divisors (12).

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, 3611979 + ... + 3612002.

It is an arithmetic number, because the mean of its divisors is an integer number (16855958).

Almost surely, 2^86687772 is an apocalyptic number.

It is an amenable number.

86687772 is an abundant number, since it is smaller than the sum of its proper divisors (115583724).

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

86687772 is a wasteful number, since it uses less digits than its factorization.

86687772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7223988 (or 7223986 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 51.

The square root of 86687772 is about 9310.6268317445. The cubic root of 86687772 is about 442.5740512541.

The spelling of 86687772 in words is "eighty-six million, six hundred eighty-seven thousand, seven hundred seventy-two".