74308613 has 2 divisors, whose sum is σ = 74308614. Its totient is φ = 74308612.

The previous prime is 74308583. The next prime is 74308631. The reversal of 74308613 is 31680347.

Together with next prime (74308631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68442529 + 5866084 = 8273^2 + 2422^2 .

It is a cyclic number.

It is not a de Polignac number, because 74308613 - 2⁸ = 74308357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74308613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74308673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37154306 + 37154307.

It is an arithmetic number, because the mean of its divisors is an integer number (37154307).

Almost surely, 2^74308613 is an apocalyptic number.

It is an amenable number.

74308613 is a deficient number, since it is larger than the sum of its proper divisors (1).

74308613 is an equidigital number, since it uses as much as digits as its factorization.

74308613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 74308613 is about 8620.2443700860. The cubic root of 74308613 is about 420.4164670961.

The spelling of 74308613 in words is "seventy-four million, three hundred eight thousand, six hundred thirteen".