74655613 has 2 divisors, whose sum is σ = 74655614. Its totient is φ = 74655612.

The previous prime is 74655601. The next prime is 74655667. The reversal of 74655613 is 31655647.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67026969 + 7628644 = 8187^2 + 2762^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74655613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74655913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37327806 + 37327807.

It is an arithmetic number, because the mean of its divisors is an integer number (37327807).

Almost surely, 2^74655613 is an apocalyptic number.

It is an amenable number.

74655613 is a deficient number, since it is larger than the sum of its proper divisors (1).

74655613 is an equidigital number, since it uses as much as digits as its factorization.

74655613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 37.

The square root of 74655613 is about 8640.3479675300. The cubic root of 74655613 is about 421.0698593738.

The spelling of 74655613 in words is "seventy-four million, six hundred fifty-five thousand, six hundred thirteen".