74747764 has 48 divisors (see below), whose sum is σ = 162062208. Its totient is φ = 29374848.

The previous prime is 74747741. The next prime is 74747779. The reversal of 74747764 is 46774747.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62379 + ... + 63565.

It is an arithmetic number, because the mean of its divisors is an integer number (3376296).

Almost surely, 2^74747764 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 74747764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81031104).

74747764 is an abundant number, since it is smaller than the sum of its proper divisors (87314444).

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

74747764 is a wasteful number, since it uses less digits than its factorization.

74747764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384 (or 1382 counting only the distinct ones).

The product of its digits is 921984, while the sum is 46.

The square root of 74747764 is about 8645.6789207095. The cubic root of 74747764 is about 421.2430370400.

The spelling of 74747764 in words is "seventy-four million, seven hundred forty-seven thousand, seven hundred sixty-four".