80628917 has 2 divisors, whose sum is σ = 80628918. Its totient is φ = 80628916.

The previous prime is 80628907. The next prime is 80628929. The reversal of 80628917 is 71982608.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46977316 + 33651601 = 6854^2 + 5801^2 .

It is a cyclic number.

It is not a de Polignac number, because 80628917 - 2¹⁴ = 80612533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80628907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40314458 + 40314459.

It is an arithmetic number, because the mean of its divisors is an integer number (40314459).

Almost surely, 2^80628917 is an apocalyptic number.

It is an amenable number.

80628917 is a deficient number, since it is larger than the sum of its proper divisors (1).

80628917 is an equidigital number, since it uses as much as digits as its factorization.

80628917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 80628917 is about 8979.3606119812. The cubic root of 80628917 is about 432.0131258157.

The spelling of 80628917 in words is "eighty million, six hundred twenty-eight thousand, nine hundred seventeen".