630290817 has 12 divisors (see below), whose sum is σ = 980452564. Its totient is φ = 387871200.

The previous prime is 630290807. The next prime is 630290839. The reversal of 630290817 is 718092036.

630290817 is a `hidden beast` number, since 630 + 2 + 9 + 0 + 8 + 17 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 267616881 + 362673936 = 16359^2 + 19044^2 .

It is not a de Polignac number, because 630290817 - 2²³ = 621902209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (630290807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2693434 + ... + 2693667.

Almost surely, 2^630290817 is an apocalyptic number.

It is an amenable number.

630290817 is a deficient number, since it is larger than the sum of its proper divisors (350161747).

630290817 is a wasteful number, since it uses less digits than its factorization.

630290817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5387120 (or 5387117 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 630290817 is about 25105.5933409270. The cubic root of 630290817 is about 857.3937760511.

The spelling of 630290817 in words is "six hundred thirty million, two hundred ninety thousand, eight hundred seventeen".