80617687 has 2 divisors, whose sum is σ = 80617688. Its totient is φ = 80617686.

The previous prime is 80617679. The next prime is 80617697. The reversal of 80617687 is 78671608.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80617687 - 2³ = 80617679 is a prime.

It is a super-2 number, since 2×80617687² = 12998422914459938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80617657) 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 as a sum of consecutive naturals, namely, 40308843 + 40308844.

It is an arithmetic number, because the mean of its divisors is an integer number (40308844).

Almost surely, 2^80617687 is an apocalyptic number.

80617687 is a deficient number, since it is larger than the sum of its proper divisors (1).

80617687 is an equidigital number, since it uses as much as digits as its factorization.

80617687 is an odious number, because the sum of its binary digits is odd.

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

The square root of 80617687 is about 8978.7352672857. The cubic root of 80617687 is about 431.9930679472.

The spelling of 80617687 in words is "eighty million, six hundred seventeen thousand, six hundred eighty-seven".