630790 has 8 divisors (see below), whose sum is σ = 1135440. Its totient is φ = 252312.

The previous prime is 630737. The next prime is 630797. The reversal of 630790 is 97036.

630790 = 168² + 169² + ... + 187².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31530 + ... + 31549.

It is an arithmetic number, because the mean of its divisors is an integer number (141930).

2⁶³⁰⁷⁹⁰ is an apocalyptic number.

630790 is a deficient number, since it is larger than the sum of its proper divisors (504650).

630790 is a wasteful number, since it uses less digits than its factorization.

630790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63086.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 630790 is about 794.2228906296. Note that the first 3 decimals coincide. The cubic root of 630790 is about 85.7620064957.

The spelling of 630790 in words is "six hundred thirty thousand, seven hundred ninety".