630397665 has 48 divisors (see below), whose sum is σ = 1112966400. Its totient is φ = 330034176.

The previous prime is 630397657. The next prime is 630397681. The reversal of 630397665 is 566793036.

630397665 is a `hidden beast` number, since 630 + 3 + 9 + 7 + 6 + 6 + 5 = 666.

It is not a de Polignac number, because 630397665 - 2³ = 630397657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 630397665.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 606216 + ... + 607254.

It is an arithmetic number, because the mean of its divisors is an integer number (23186800).

Almost surely, 2^630397665 is an apocalyptic number.

It is an amenable number.

630397665 is a deficient number, since it is larger than the sum of its proper divisors (482568735).

630397665 is a wasteful number, since it uses less digits than its factorization.

630397665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286 (or 1283 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 45.

The square root of 630397665 is about 25107.7212227633. The cubic root of 630397665 is about 857.4422222770.

The spelling of 630397665 in words is "six hundred thirty million, three hundred ninety-seven thousand, six hundred sixty-five".