74704913 has 2 divisors, whose sum is σ = 74704914. Its totient is φ = 74704912.

The previous prime is 74704891. The next prime is 74704921. The reversal of 74704913 is 31940747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47789569 + 26915344 = 6913^2 + 5188^2 .

It is an emirp because it is prime and its reverse (31940747) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74704913 - 2⁸ = 74704657 is a prime.

It is not a weakly prime, because it can be changed into another prime (74704963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37352456 + 37352457.

It is an arithmetic number, because the mean of its divisors is an integer number (37352457).

Almost surely, 2^74704913 is an apocalyptic number.

It is an amenable number.

74704913 is a deficient number, since it is larger than the sum of its proper divisors (1).

74704913 is an equidigital number, since it uses as much as digits as its factorization.

74704913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 74704913 is about 8643.2003910589. The cubic root of 74704913 is about 421.1625256648.

The spelling of 74704913 in words is "seventy-four million, seven hundred four thousand, nine hundred thirteen".