630791288 has 8 divisors (see below), whose sum is σ = 1182733680. Its totient is φ = 315395640.

The previous prime is 630791251. The next prime is 630791309. The reversal of 630791288 is 882197036.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39424448 + ... + 39424463.

It is an arithmetic number, because the mean of its divisors is an integer number (147841710).

Almost surely, 2^630791288 is an apocalyptic number.

It is an amenable number.

630791288 is a deficient number, since it is larger than the sum of its proper divisors (551942392).

630791288 is a wasteful number, since it uses less digits than its factorization.

630791288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78848917 (or 78848913 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 630791288 is about 25115.5586838119. The cubic root of 630791288 is about 857.6206486765.

The spelling of 630791288 in words is "six hundred thirty million, seven hundred ninety-one thousand, two hundred eighty-eight".