79704641 has 2 divisors, whose sum is σ = 79704642. Its totient is φ = 79704640.

The previous prime is 79704631. The next prime is 79704679. The reversal of 79704641 is 14640797.

It is an a-pointer prime, because the next prime (79704679) can be obtained adding 79704641 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70224400 + 9480241 = 8380^2 + 3079^2 .

It is an emirp because it is prime and its reverse (14640797) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79704641 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 79704595 and 79704604.

It is not a weakly prime, because it can be changed into another prime (79704631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39852320 + 39852321.

It is an arithmetic number, because the mean of its divisors is an integer number (39852321).

Almost surely, 2^79704641 is an apocalyptic number.

It is an amenable number.

79704641 is a deficient number, since it is larger than the sum of its proper divisors (1).

79704641 is an equidigital number, since it uses as much as digits as its factorization.

79704641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 79704641 is about 8927.7455720915. The cubic root of 79704641 is about 430.3560076769.

The spelling of 79704641 in words is "seventy-nine million, seven hundred four thousand, six hundred forty-one".