630218904 has 128 divisors (see below), whose sum is σ = 1907712000. Its totient is φ = 169478784.

The previous prime is 630218903. The next prime is 630218909. The reversal of 630218904 is 409812036.

It is a super-2 number, since 2×630218904² = 794351733917922432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630218903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 570817 + ... + 571919.

It is an arithmetic number, because the mean of its divisors is an integer number (14904000).

Almost surely, 2^630218904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630218904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (953856000).

630218904 is an abundant number, since it is smaller than the sum of its proper divisors (1277493096).

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

630218904 is a wasteful number, since it uses less digits than its factorization.

630218904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317 (or 1313 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 630218904 is about 25104.1610893493. The cubic root of 630218904 is about 857.3611667105.

The spelling of 630218904 in words is "six hundred thirty million, two hundred eighteen thousand, nine hundred four".