79663601 has 2 divisors, whose sum is σ = 79663602. Its totient is φ = 79663600.

The previous prime is 79663579. The next prime is 79663613. The reversal of 79663601 is 10636697.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70543201 + 9120400 = 8399^2 + 3020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79663601 is a prime.

It is not a weakly prime, because it can be changed into another prime (79663681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39831800 + 39831801.

It is an arithmetic number, because the mean of its divisors is an integer number (39831801).

Almost surely, 2^79663601 is an apocalyptic number.

It is an amenable number.

79663601 is a deficient number, since it is larger than the sum of its proper divisors (1).

79663601 is an equidigital number, since it uses as much as digits as its factorization.

79663601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 79663601 is about 8925.4468235489. The cubic root of 79663601 is about 430.2821314151.

The spelling of 79663601 in words is "seventy-nine million, six hundred sixty-three thousand, six hundred one".