80830657 has 2 divisors, whose sum is σ = 80830658. Its totient is φ = 80830656.

The previous prime is 80830643. The next prime is 80830663. The reversal of 80830657 is 75603808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78127921 + 2702736 = 8839^2 + 1644^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80830657 is a prime.

It is a super-2 number, since 2×80830657² = 13067190222103298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80830697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40415328 + 40415329.

It is an arithmetic number, because the mean of its divisors is an integer number (40415329).

Almost surely, 2^80830657 is an apocalyptic number.

It is an amenable number.

80830657 is a deficient number, since it is larger than the sum of its proper divisors (1).

80830657 is an equidigital number, since it uses as much as digits as its factorization.

80830657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 80830657 is about 8990.5871332188. The cubic root of 80830657 is about 432.3731361904.

The spelling of 80830657 in words is "eighty million, eight hundred thirty thousand, six hundred fifty-seven".