630555656 has 32 divisors (see below), whose sum is σ = 1204416000. Its totient is φ = 309397056.

The previous prime is 630555617. The next prime is 630555659. The reversal of 630555656 is 656555036.

It is not an unprimeable number, because it can be changed into a prime (630555659) 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, 512450 + ... + 513678.

It is an arithmetic number, because the mean of its divisors is an integer number (37638000).

Almost surely, 2^630555656 is an apocalyptic number.

It is an amenable number.

630555656 is a deficient number, since it is larger than the sum of its proper divisors (573860344).

630555656 is a wasteful number, since it uses less digits than its factorization.

630555656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2381 (or 2377 counting only the distinct ones).

The product of its (nonzero) digits is 405000, while the sum is 41.

The square root of 630555656 is about 25110.8672888851. The cubic root of 630555656 is about 857.5138473512.

The spelling of 630555656 in words is "six hundred thirty million, five hundred fifty-five thousand, six hundred fifty-six".