665329630 has 16 divisors (see below), whose sum is σ = 1368678240. Its totient is φ = 228112992.

The previous prime is 665329627. The next prime is 665329699. The reversal of 665329630 is 36923566.

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 7 ways as a sum of consecutive naturals, for example, 4752285 + ... + 4752424.

It is an arithmetic number, because the mean of its divisors is an integer number (85542390).

Almost surely, 2^665329630 is an apocalyptic number.

665329630 is an abundant number, since it is smaller than the sum of its proper divisors (703348610).

665329630 is a wasteful number, since it uses less digits than its factorization.

665329630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9504723.

The product of its (nonzero) digits is 174960, while the sum is 40.

The square root of 665329630 is about 25793.9843762068. The cubic root of 665329630 is about 872.9960693266.

The spelling of 665329630 in words is "six hundred sixty-five million, three hundred twenty-nine thousand, six hundred thirty".