74681613 has 12 divisors (see below), whose sum is σ = 108883008. Its totient is φ = 49321800.

The previous prime is 74681599. The next prime is 74681627. The reversal of 74681613 is 31618647.

It is an interprime number because it is at equal distance from previous prime (74681599) and next prime (74681627).

It is not a de Polignac number, because 74681613 - 2¹⁰ = 74680589 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74681683) 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 in 11 ways as a sum of consecutive naturals, for example, 37813 + ... + 39738.

It is an arithmetic number, because the mean of its divisors is an integer number (9073584).

Almost surely, 2^74681613 is an apocalyptic number.

It is an amenable number.

74681613 is a deficient number, since it is larger than the sum of its proper divisors (34201395).

74681613 is a wasteful number, since it uses less digits than its factorization.

74681613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77664 (or 77661 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 74681613 is about 8641.8524055899. The cubic root of 74681613 is about 421.1187351168.

The spelling of 74681613 in words is "seventy-four million, six hundred eighty-one thousand, six hundred thirteen".