630655078 has 16 divisors (see below), whose sum is σ = 989277696. Its totient is φ = 300956040.

The previous prime is 630655031. The next prime is 630655117. The reversal of 630655078 is 870556036.

It is a self number, because there is not a number n which added to its sum of digits gives 630655078.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6493 + ... + 36103.

It is an arithmetic number, because the mean of its divisors is an integer number (61829856).

Almost surely, 2^630655078 is an apocalyptic number.

630655078 is a deficient number, since it is larger than the sum of its proper divisors (358622618).

630655078 is a wasteful number, since it uses less digits than its factorization.

630655078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30099.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 630655078 is about 25112.8468716711. The cubic root of 630655078 is about 857.5589140901.

The spelling of 630655078 in words is "six hundred thirty million, six hundred fifty-five thousand, seventy-eight".