74615993 has 8 divisors (see below), whose sum is σ = 76143936. Its totient is φ = 73098000.

The previous prime is 74615963. The next prime is 74615999. The reversal of 74615993 is 39951647.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74615993 - 2¹² = 74611897 is a prime.

It is a super-2 number, since 2×74615993² = 11135092822752098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74615999) 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 7 ways as a sum of consecutive naturals, for example, 13718 + ... + 18368.

It is an arithmetic number, because the mean of its divisors is an integer number (9517992).

Almost surely, 2^74615993 is an apocalyptic number.

It is an amenable number.

74615993 is a deficient number, since it is larger than the sum of its proper divisors (1527943).

74615993 is a wasteful number, since it uses less digits than its factorization.

74615993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4975.

The product of its digits is 204120, while the sum is 44.

The square root of 74615993 is about 8638.0549315225. The cubic root of 74615993 is about 420.9953584344.

The spelling of 74615993 in words is "seventy-four million, six hundred fifteen thousand, nine hundred ninety-three".