74431764 has 48 divisors (see below), whose sum is σ = 210517440. Its totient is φ = 22554720.

The previous prime is 74431741. The next prime is 74431787. The reversal of 74431764 is 46713447.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (74431741) and next prime (74431787).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 30139 + ... + 32514.

It is an arithmetic number, because the mean of its divisors is an integer number (4385780).

Almost surely, 2^74431764 is an apocalyptic number.

It is an amenable number.

74431764 is an abundant number, since it is smaller than the sum of its proper divisors (136085676).

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

74431764 is a wasteful number, since it uses less digits than its factorization.

74431764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62677 (or 62669 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 74431764 is about 8627.3845399402. The cubic root of 74431764 is about 420.6485897292.

The spelling of 74431764 in words is "seventy-four million, four hundred thirty-one thousand, seven hundred sixty-four".