86966816 has 12 divisors (see below), whose sum is σ = 171215982. Its totient is φ = 43483392.

The previous prime is 86966813. The next prime is 86966821. The reversal of 86966816 is 61866968.

It can be written as a sum of positive squares in only one way, i.e., 55651600 + 31315216 = 7460^2 + 5596^2 .

It is not an unprimeable number, because it can be changed into a prime (86966813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1358825 + ... + 1358888.

Almost surely, 2^86966816 is an apocalyptic number.

It is an amenable number.

86966816 is a deficient number, since it is larger than the sum of its proper divisors (84249166).

86966816 is a wasteful number, since it uses less digits than its factorization.

86966816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2717723 (or 2717715 counting only the distinct ones).

The product of its digits is 746496, while the sum is 50.

The square root of 86966816 is about 9325.6000343141. The cubic root of 86966816 is about 443.0484178846.

The spelling of 86966816 in words is "eighty-six million, nine hundred sixty-six thousand, eight hundred sixteen".