86720576 has 28 divisors (see below), whose sum is σ = 176288700. Its totient is φ = 42301440.

The previous prime is 86720537. The next prime is 86720581. The reversal of 86720576 is 67502768.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1638400 + 85082176 = 1280^2 + 9224^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

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, 13901 + ... + 19148.

It is an arithmetic number, because the mean of its divisors is an integer number (6296025).

Almost surely, 2^86720576 is an apocalyptic number.

It is an amenable number.

86720576 is an abundant number, since it is smaller than the sum of its proper divisors (89568124).

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

86720576 is a wasteful number, since it uses less digits than its factorization.

86720576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33102 (or 33092 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 86720576 is about 9312.3883080550. The cubic root of 86720576 is about 442.6298698466.

The spelling of 86720576 in words is "eighty-six million, seven hundred twenty thousand, five hundred seventy-six".