630623772 has 96 divisors (see below), whose sum is σ = 1749464640. Its totient is φ = 195747840.

The previous prime is 630623771. The next prime is 630623779. The reversal of 630623772 is 277326036.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630623771) 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, 176322 + ... + 179862.

It is an arithmetic number, because the mean of its divisors is an integer number (18223590).

Almost surely, 2^630623772 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 630623772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (874732320).

630623772 is an abundant number, since it is smaller than the sum of its proper divisors (1118840868).

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

630623772 is a wasteful number, since it uses less digits than its factorization.

630623772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3668 (or 3660 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 36.

The square root of 630623772 is about 25112.2235574630. The cubic root of 630623772 is about 857.5447239860.

The spelling of 630623772 in words is "six hundred thirty million, six hundred twenty-three thousand, seven hundred seventy-two".