630386550 has 120 divisors (see below), whose sum is σ = 1808402112. Its totient is φ = 162648000.

The previous prime is 630386527. The next prime is 630386563. The reversal of 630386550 is 55683036.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 123040 + ... + 128060.

Almost surely, 2^630386550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630386550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (904201056).

630386550 is an abundant number, since it is smaller than the sum of its proper divisors (1178015562).

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

630386550 is a wasteful number, since it uses less digits than its factorization.

630386550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5076 (or 5062 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 630386550 is about 25107.4998755352. The cubic root of 630386550 is about 857.4371828514.

The spelling of 630386550 in words is "six hundred thirty million, three hundred eighty-six thousand, five hundred fifty".