80677687 has 2 divisors, whose sum is σ = 80677688. Its totient is φ = 80677686.

The previous prime is 80677669. The next prime is 80677691. The reversal of 80677687 is 78677608.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80677687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80677687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80677637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40338843 + 40338844.

It is an arithmetic number, because the mean of its divisors is an integer number (40338844).

Almost surely, 2^80677687 is an apocalyptic number.

80677687 is a deficient number, since it is larger than the sum of its proper divisors (1).

80677687 is an equidigital number, since it uses as much as digits as its factorization.

80677687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 790272, while the sum is 49.

The square root of 80677687 is about 8982.0758736497. The cubic root of 80677687 is about 432.1002121627.

The spelling of 80677687 in words is "eighty million, six hundred seventy-seven thousand, six hundred eighty-seven".