80866628 has 12 divisors (see below), whose sum is σ = 141579900. Its totient is φ = 40415232.

The previous prime is 80866627. The next prime is 80866633. The reversal of 80866628 is 82666808.

It can be written as a sum of positive squares in 2 ways, for example, as 23833924 + 57032704 = 4882^2 + 7552^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (80866627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13700 + ... + 18692.

It is an arithmetic number, because the mean of its divisors is an integer number (11798325).

Almost surely, 2^80866628 is an apocalyptic number.

It is an amenable number.

80866628 is a deficient number, since it is larger than the sum of its proper divisors (60713272).

80866628 is a wasteful number, since it uses less digits than its factorization.

80866628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9046 (or 9044 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 80866628 is about 8992.5873918467. The cubic root of 80866628 is about 432.4372644478.

The spelling of 80866628 in words is "eighty million, eight hundred sixty-six thousand, six hundred twenty-eight".