630823998 has 48 divisors (see below), whose sum is σ = 1531718784. Its totient is φ = 169630080.

The previous prime is 630823943. The next prime is 630824017. The reversal of 630823998 is 899328036.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13848 + ... + 38123.

It is an arithmetic number, because the mean of its divisors is an integer number (31910808).

Almost surely, 2^630823998 is an apocalyptic number.

630823998 is an abundant number, since it is smaller than the sum of its proper divisors (900894786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

630823998 is a wasteful number, since it uses less digits than its factorization.

630823998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52017 (or 52000 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 630823998 is about 25116.2098653439. The cubic root of 630823998 is about 857.6354725372.

The spelling of 630823998 in words is "six hundred thirty million, eight hundred twenty-three thousand, nine hundred ninety-eight".