630556646 has 16 divisors (see below), whose sum is σ = 951312384. Its totient is φ = 313458504.

The previous prime is 630556637. The next prime is 630556649. The reversal of 630556646 is 646655036.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630556649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280001 + ... + 282243.

It is an arithmetic number, because the mean of its divisors is an integer number (59457024).

Almost surely, 2^630556646 is an apocalyptic number.

630556646 is a deficient number, since it is larger than the sum of its proper divisors (320755738).

630556646 is a wasteful number, since it uses less digits than its factorization.

630556646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2995.

The product of its (nonzero) digits is 388800, while the sum is 41.

The square root of 630556646 is about 25110.8870014582. The cubic root of 630556646 is about 857.5142961291.

The spelling of 630556646 in words is "six hundred thirty million, five hundred fifty-six thousand, six hundred forty-six".