74878664 has 48 divisors (see below), whose sum is σ = 165815280. Its totient is φ = 31600800.

The previous prime is 74878663. The next prime is 74878681. The reversal of 74878664 is 46687847.

It is not an unprimeable number, because it can be changed into a prime (74878663) 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, 24839 + ... + 27689.

It is an arithmetic number, because the mean of its divisors is an integer number (3454485).

Almost surely, 2^74878664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74878664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82907640).

74878664 is an abundant number, since it is smaller than the sum of its proper divisors (90936616).

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

74878664 is a wasteful number, since it uses less digits than its factorization.

74878664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2938 (or 2927 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 50.

The square root of 74878664 is about 8653.2458649919. The cubic root of 74878664 is about 421.4887904645.

The spelling of 74878664 in words is "seventy-four million, eight hundred seventy-eight thousand, six hundred sixty-four".