80677667 has 24 divisors (see below), whose sum is σ = 99522000. Its totient is φ = 65028096.

The previous prime is 80677661. The next prime is 80677669. The reversal of 80677667 is 76677608.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-80677667 is a prime.

It is a hoax number, since the sum of its digits (47) 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 (80677661) 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 23 ways as a sum of consecutive naturals, for example, 179459 + ... + 179907.

It is an arithmetic number, because the mean of its divisors is an integer number (4146750).

Almost surely, 2^80677667 is an apocalyptic number.

80677667 is the 7334-th pentagonal number.

80677667 is a deficient number, since it is larger than the sum of its proper divisors (18844333).

80677667 is a wasteful number, since it uses less digits than its factorization.

80677667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675 (or 668 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 47.

The square root of 80677667 is about 8982.0747603212. The cubic root of 80677667 is about 432.1001764568.

The spelling of 80677667 in words is "eighty million, six hundred seventy-seven thousand, six hundred sixty-seven".