665875074 has 48 divisors (see below), whose sum is σ = 1425531168. Its totient is φ = 207303168.

The previous prime is 665875073. The next prime is 665875079. The reversal of 665875074 is 470578566.

It is a super-2 number, since 2×665875074² = 886779228349010952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (665875073) 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 23 ways as a sum of consecutive naturals, for example, 236157 + ... + 238959.

It is an arithmetic number, because the mean of its divisors is an integer number (29698566).

Almost surely, 2^665875074 is an apocalyptic number.

665875074 is an abundant number, since it is smaller than the sum of its proper divisors (759656094).

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

665875074 is a wasteful number, since it uses less digits than its factorization.

665875074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979 (or 2962 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 48.

The square root of 665875074 is about 25804.5552955287. Note that the first 3 decimals coincide. The cubic root of 665875074 is about 873.2345678506.

The spelling of 665875074 in words is "six hundred sixty-five million, eight hundred seventy-five thousand, seventy-four".