665124160 has 28 divisors (see below), whose sum is σ = 1583827668. Its totient is φ = 266049536.

The previous prime is 665124151. The next prime is 665124199. The reversal of 665124160 is 61421566.

665124160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 465523776 + 199600384 = 21576^2 + 14128^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1038937 + ... + 1039576.

Almost surely, 2^665124160 is an apocalyptic number.

It is an amenable number.

665124160 is an abundant number, since it is smaller than the sum of its proper divisors (918703508).

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

665124160 is a wasteful number, since it uses less digits than its factorization.

665124160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078530 (or 2078520 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 665124160 is about 25790.0011632415. The cubic root of 665124160 is about 872.9061925886.

The spelling of 665124160 in words is "six hundred sixty-five million, one hundred twenty-four thousand, one hundred sixty".