665435360 has 24 divisors (see below), whose sum is σ = 1572091416. Its totient is φ = 266174080.

The previous prime is 665435297. The next prime is 665435377. The reversal of 665435360 is 63534566.

It is a happy number.

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, 2079326 + ... + 2079645.

It is an arithmetic number, because the mean of its divisors is an integer number (65503809).

Almost surely, 2^665435360 is an apocalyptic number.

It is an amenable number.

665435360 is an abundant number, since it is smaller than the sum of its proper divisors (906656056).

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

665435360 is a wasteful number, since it uses less digits than its factorization.

665435360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4158986 (or 4158978 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 38.

The square root of 665435360 is about 25796.0338036683. The cubic root of 665435360 is about 873.0423105587.

The spelling of 665435360 in words is "six hundred sixty-five million, four hundred thirty-five thousand, three hundred sixty".