80781676 has 12 divisors (see below), whose sum is σ = 141443008. Its totient is φ = 40369392.

The previous prime is 80781667. The next prime is 80781689. The reversal of 80781676 is 67618708.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5605 + ... + 13891.

Almost surely, 2^80781676 is an apocalyptic number.

It is an amenable number.

80781676 is a deficient number, since it is larger than the sum of its proper divisors (60661332).

80781676 is a wasteful number, since it uses less digits than its factorization.

80781676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10728 (or 10726 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 80781676 is about 8987.8627047814. The cubic root of 80781676 is about 432.2857834104.

The spelling of 80781676 in words is "eighty million, seven hundred eighty-one thousand, six hundred seventy-six".