79864601 has 2 divisors, whose sum is σ = 79864602. Its totient is φ = 79864600.

The previous prime is 79864573. The next prime is 79864607. The reversal of 79864601 is 10646897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79192201 + 672400 = 8899^2 + 820^2 .

It is a cyclic number.

It is not a de Polignac number, because 79864601 - 2¹⁰ = 79863577 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (79864607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39932300 + 39932301.

It is an arithmetic number, because the mean of its divisors is an integer number (39932301).

Almost surely, 2^79864601 is an apocalyptic number.

It is an amenable number.

79864601 is a deficient number, since it is larger than the sum of its proper divisors (1).

79864601 is an equidigital number, since it uses as much as digits as its factorization.

79864601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 79864601 is about 8936.6996704600. The cubic root of 79864601 is about 430.6437104827.

The spelling of 79864601 in words is "seventy-nine million, eight hundred sixty-four thousand, six hundred one".