665130244 has 6 divisors (see below), whose sum is σ = 1163977934. Its totient is φ = 332565120.

The previous prime is 665130233. The next prime is 665130259. The reversal of 665130244 is 442031566.

It can be written as a sum of positive squares in only one way, i.e., 473584644 + 191545600 = 21762^2 + 13840^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83141277 + ... + 83141284.

Almost surely, 2^665130244 is an apocalyptic number.

It is an amenable number.

665130244 is a deficient number, since it is larger than the sum of its proper divisors (498847690).

665130244 is a wasteful number, since it uses less digits than its factorization.

665130244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166282565 (or 166282563 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 665130244 is about 25790.1191156613. The cubic root of 665130244 is about 872.9088541193.

The spelling of 665130244 in words is "six hundred sixty-five million, one hundred thirty thousand, two hundred forty-four".