74989660 has 24 divisors (see below), whose sum is σ = 164326176. Its totient is φ = 28691520.

The previous prime is 74989657. The next prime is 74989667. The reversal of 74989660 is 6698947.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74989667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81051 + ... + 81970.

It is an arithmetic number, because the mean of its divisors is an integer number (6846924).

Almost surely, 2^74989660 is an apocalyptic number.

It is an amenable number.

74989660 is an abundant number, since it is smaller than the sum of its proper divisors (89336516).

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

74989660 is a wasteful number, since it uses less digits than its factorization.

74989660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163053 (or 163051 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 74989660 is about 8659.6570370887. The cubic root of 74989660 is about 421.6969515518.

It can be divided in two parts, 749896 and 60, that added together give a square (749956 = 866²).

The spelling of 74989660 in words is "seventy-four million, nine hundred eighty-nine thousand, six hundred sixty".