74417664 has 40 divisors (see below), whose sum is σ = 198257400. Its totient is φ = 24805376.

The previous prime is 74417663. The next prime is 74417677. The reversal of 74417664 is 46671447.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74417663) 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, 22689 + ... + 25760.

It is an arithmetic number, because the mean of its divisors is an integer number (4956435).

Almost surely, 2^74417664 is an apocalyptic number.

It is an amenable number.

74417664 is an abundant number, since it is smaller than the sum of its proper divisors (123839736).

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

74417664 is an equidigital number, since it uses as much as digits as its factorization.

74417664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48470 (or 48454 counting only the distinct ones).

The product of its digits is 112896, while the sum is 39.

The square root of 74417664 is about 8626.5673358527. The cubic root of 74417664 is about 420.6220261612.

The spelling of 74417664 in words is "seventy-four million, four hundred seventeen thousand, six hundred sixty-four".