74891264 has 60 divisors (see below), whose sum is σ = 171436944. Its totient is φ = 32047104.

The previous prime is 74891263. The next prime is 74891281. The reversal of 74891264 is 46219847.

It is not an unprimeable number, because it can be changed into a prime (74891261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114362 + ... + 115014.

Almost surely, 2^74891264 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 74891264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85718472).

74891264 is an abundant number, since it is smaller than the sum of its proper divisors (96545680).

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

74891264 is an frugal number, since it uses more digits than its factorization.

74891264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688 (or 662 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 74891264 is about 8653.9738848693. The cubic root of 74891264 is about 421.5124307586.

The spelling of 74891264 in words is "seventy-four million, eight hundred ninety-one thousand, two hundred sixty-four".