74859921 has 12 divisors (see below), whose sum is σ = 108780672. Its totient is φ = 49606776.

The previous prime is 74859907. The next prime is 74859929. The reversal of 74859921 is 12995847.

It is not a de Polignac number, because 74859921 - 2¹⁵ = 74827153 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (74859929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23401 + ... + 26406.

It is an arithmetic number, because the mean of its divisors is an integer number (9065056).

Almost surely, 2^74859921 is an apocalyptic number.

It is an amenable number.

74859921 is a deficient number, since it is larger than the sum of its proper divisors (33920751).

74859921 is a wasteful number, since it uses less digits than its factorization.

74859921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49980 (or 49977 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 74859921 is about 8652.1627931980. The cubic root of 74859921 is about 421.4536196819.

The spelling of 74859921 in words is "seventy-four million, eight hundred fifty-nine thousand, nine hundred twenty-one".