80691976 has 16 divisors (see below), whose sum is σ = 151471440. Its totient is φ = 40299600.

The previous prime is 80691973. The next prime is 80691983. The reversal of 80691976 is 67919608.

It is a super-2 number, since 2×80691976² = 13022389981569152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80691971) by changing a digit.

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, 2251 + ... + 12901.

It is an arithmetic number, because the mean of its divisors is an integer number (9466965).

Almost surely, 2^80691976 is an apocalyptic number.

It is an amenable number.

80691976 is a deficient number, since it is larger than the sum of its proper divisors (70779464).

80691976 is a wasteful number, since it uses less digits than its factorization.

80691976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11604 (or 11600 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 80691976 is about 8982.8712558959. The cubic root of 80691976 is about 432.1257207251.

The spelling of 80691976 in words is "eighty million, six hundred ninety-one thousand, nine hundred seventy-six".