79998601 has 2 divisors, whose sum is σ = 79998602. Its totient is φ = 79998600.

The previous prime is 79998593. The next prime is 79998613. The reversal of 79998601 is 10689997.

79998601 = 6324² + 6325².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40005625 + 39992976 = 6325^2 + 6324^2 .

It is a cyclic number.

It is not a de Polignac number, because 79998601 - 2³ = 79998593 is a prime.

It is not a weakly prime, because it can be changed into another prime (79998641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39999300 + 39999301.

It is an arithmetic number, because the mean of its divisors is an integer number (39999301).

Almost surely, 2^79998601 is an apocalyptic number.

79998601 is the 6325-th centered square number.

It is an amenable number.

79998601 is a deficient number, since it is larger than the sum of its proper divisors (1).

79998601 is an equidigital number, since it uses as much as digits as its factorization.

79998601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 79998601 is about 8944.1937031797. The cubic root of 79998601 is about 430.8844262800.

The spelling of 79998601 in words is "seventy-nine million, nine hundred ninety-eight thousand, six hundred one".