630763917 has 12 divisors (see below), whose sum is σ = 978327936. Its totient is φ = 360436440.

The previous prime is 630763909. The next prime is 630763927. The reversal of 630763917 is 719367036.

It is not a de Polignac number, because 630763917 - 2³ = 630763909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630763907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2145309 + ... + 2145602.

It is an arithmetic number, because the mean of its divisors is an integer number (81527328).

Almost surely, 2^630763917 is an apocalyptic number.

It is an amenable number.

630763917 is a deficient number, since it is larger than the sum of its proper divisors (347564019).

630763917 is a wasteful number, since it uses less digits than its factorization.

630763917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4290928 (or 4290921 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 42.

The square root of 630763917 is about 25115.0137766237. The cubic root of 630763917 is about 857.6082440060.

The spelling of 630763917 in words is "six hundred thirty million, seven hundred sixty-three thousand, nine hundred seventeen".