80172613 has 2 divisors, whose sum is σ = 80172614. Its totient is φ = 80172612.

The previous prime is 80172593. The next prime is 80172721. The reversal of 80172613 is 31627108.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79977249 + 195364 = 8943^2 + 442^2 .

It is a cyclic number.

It is not a de Polignac number, because 80172613 - 2⁵ = 80172581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80172013) 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, 40086306 + 40086307.

It is an arithmetic number, because the mean of its divisors is an integer number (40086307).

Almost surely, 2^80172613 is an apocalyptic number.

It is an amenable number.

80172613 is a deficient number, since it is larger than the sum of its proper divisors (1).

80172613 is an equidigital number, since it uses as much as digits as its factorization.

80172613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 80172613 is about 8953.9160706364. The cubic root of 80172613 is about 431.1966182472.

The spelling of 80172613 in words is "eighty million, one hundred seventy-two thousand, six hundred thirteen".