74005660 has 12 divisors (see below), whose sum is σ = 155411928. Its totient is φ = 29602256.

The previous prime is 74005639. The next prime is 74005663. The reversal of 74005660 is 6650047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74005663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1850122 + ... + 1850161.

It is an arithmetic number, because the mean of its divisors is an integer number (12950994).

Almost surely, 2^74005660 is an apocalyptic number.

It is an amenable number.

74005660 is an abundant number, since it is smaller than the sum of its proper divisors (81406268).

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

74005660 is a wasteful number, since it uses less digits than its factorization.

74005660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3700292 (or 3700290 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 74005660 is about 8602.6542415699. The cubic root of 74005660 is about 419.8443489748.

The spelling of 74005660 in words is "seventy-four million, five thousand, six hundred sixty".