665315960 has 16 divisors (see below), whose sum is σ = 1496961000. Its totient is φ = 266126368.

The previous prime is 665315957. The next prime is 665316007. The reversal of 665315960 is 69513566.

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, 8316410 + ... + 8316489.

Almost surely, 2^665315960 is an apocalyptic number.

It is an amenable number.

665315960 is an abundant number, since it is smaller than the sum of its proper divisors (831645040).

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

665315960 is a wasteful number, since it uses less digits than its factorization.

665315960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16632910 (or 16632906 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 41.

The square root of 665315960 is about 25793.7193905803. The cubic root of 665315960 is about 872.9900903665.

The spelling of 665315960 in words is "six hundred sixty-five million, three hundred fifteen thousand, nine hundred sixty".