630661633 has 24 divisors (see below), whose sum is σ = 773987648. Its totient is φ = 502980192.

The previous prime is 630661627. The next prime is 630661657. The reversal of 630661633 is 336166036.

It is not a de Polignac number, because 630661633 - 2⁵ = 630661601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (630664633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 134710 + ... + 139312.

Almost surely, 2^630661633 is an apocalyptic number.

It is an amenable number.

630661633 is a deficient number, since it is larger than the sum of its proper divisors (143326015).

630661633 is a wasteful number, since it uses less digits than its factorization.

630661633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4693 (or 4670 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 34.

The square root of 630661633 is about 25112.9773822221. The cubic root of 630661633 is about 857.5618852225.

The spelling of 630661633 in words is "six hundred thirty million, six hundred sixty-one thousand, six hundred thirty-three".