74499613 has 2 divisors, whose sum is σ = 74499614. Its totient is φ = 74499612.

The previous prime is 74499587. The next prime is 74499619. The reversal of 74499613 is 31699447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74183769 + 315844 = 8613^2 + 562^2 .

It is a cyclic number.

It is not a de Polignac number, because 74499613 - 2⁹ = 74499101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74499613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74499619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37249806 + 37249807.

It is an arithmetic number, because the mean of its divisors is an integer number (37249807).

Almost surely, 2^74499613 is an apocalyptic number.

It is an amenable number.

74499613 is a deficient number, since it is larger than the sum of its proper divisors (1).

74499613 is an equidigital number, since it uses as much as digits as its factorization.

74499613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The square root of 74499613 is about 8631.3158324788. The cubic root of 74499613 is about 420.7763663524.

The spelling of 74499613 in words is "seventy-four million, four hundred ninety-nine thousand, six hundred thirteen".