74179913 has 4 divisors (see below), whose sum is σ = 75579588. Its totient is φ = 72780240.

The previous prime is 74179909. The next prime is 74179943. The reversal of 74179913 is 31997147.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28590409 + 45589504 = 5347^2 + 6752^2 .

It is a cyclic number.

It is not a de Polignac number, because 74179913 - 2² = 74179909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74179943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699758 + ... + 699863.

It is an arithmetic number, because the mean of its divisors is an integer number (18894897).

Almost surely, 2^74179913 is an apocalyptic number.

It is an amenable number.

74179913 is a deficient number, since it is larger than the sum of its proper divisors (1399675).

74179913 is a wasteful number, since it uses less digits than its factorization.

74179913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399674.

The product of its digits is 47628, while the sum is 41.

The square root of 74179913 is about 8612.7761494190. The cubic root of 74179913 is about 420.1736111438.

The spelling of 74179913 in words is "seventy-four million, one hundred seventy-nine thousand, nine hundred thirteen".