74555660 has 24 divisors (see below), whose sum is σ = 156765840. Its totient is φ = 29784384.

The previous prime is 74555641. The next prime is 74555669. The reversal of 74555660 is 6655547.

It is not an unprimeable number, because it can be changed into a prime (74555669) 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, 18071 + ... + 21809.

It is an arithmetic number, because the mean of its divisors is an integer number (6531910).

Almost surely, 2^74555660 is an apocalyptic number.

It is an amenable number.

74555660 is an abundant number, since it is smaller than the sum of its proper divisors (82210180).

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

74555660 is a wasteful number, since it uses less digits than its factorization.

74555660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4745 (or 4743 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 38.

The square root of 74555660 is about 8634.5619460399. The cubic root of 74555660 is about 420.8818583612.

The spelling of 74555660 in words is "seventy-four million, five hundred fifty-five thousand, six hundred sixty".