79598621 has 2 divisors, whose sum is σ = 79598622. Its totient is φ = 79598620.

The previous prime is 79598609. The next prime is 79598681. The reversal of 79598621 is 12689597.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55204900 + 24393721 = 7430^2 + 4939^2 .

It is an emirp because it is prime and its reverse (12689597) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79598621 - 2¹⁰ = 79597597 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79598681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39799310 + 39799311.

It is an arithmetic number, because the mean of its divisors is an integer number (39799311).

Almost surely, 2^79598621 is an apocalyptic number.

It is an amenable number.

79598621 is a deficient number, since it is larger than the sum of its proper divisors (1).

79598621 is an equidigital number, since it uses as much as digits as its factorization.

79598621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 47.

The square root of 79598621 is about 8921.8059270531. The cubic root of 79598621 is about 430.1651087596.

The spelling of 79598621 in words is "seventy-nine million, five hundred ninety-eight thousand, six hundred twenty-one".