74943864 has 48 divisors (see below), whose sum is σ = 209526720. Its totient is φ = 24174720.

The previous prime is 74943863. The next prime is 74943877. The reversal of 74943864 is 46834947.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74943863) 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, 14557 + ... + 19020.

It is an arithmetic number, because the mean of its divisors is an integer number (4365140).

Almost surely, 2^74943864 is an apocalyptic number.

It is an amenable number.

74943864 is an abundant number, since it is smaller than the sum of its proper divisors (134582856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74943864 is a wasteful number, since it uses less digits than its factorization.

74943864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33620 (or 33613 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 74943864 is about 8657.0124176878. The cubic root of 74943864 is about 421.6110909759.

The spelling of 74943864 in words is "seventy-four million, nine hundred forty-three thousand, eight hundred sixty-four".