86720416 has 12 divisors (see below), whose sum is σ = 170730882. Its totient is φ = 43360192.

The previous prime is 86720407. The next prime is 86720429. The reversal of 86720416 is 61402768.

It can be written as a sum of positive squares in only one way, i.e., 72250000 + 14470416 = 8500^2 + 3804^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1354975 + ... + 1355038.

Almost surely, 2^86720416 is an apocalyptic number.

It is an amenable number.

86720416 is a deficient number, since it is larger than the sum of its proper divisors (84010466).

86720416 is a wasteful number, since it uses less digits than its factorization.

86720416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2710023 (or 2710015 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 86720416 is about 9312.3797173440. The cubic root of 86720416 is about 442.6295976282.

The spelling of 86720416 in words is "eighty-six million, seven hundred twenty thousand, four hundred sixteen".