632688130 has 16 divisors (see below), whose sum is σ = 1148918904. Its totient is φ = 250835200.

The previous prime is 632688127. The next prime is 632688131. The reversal of 632688130 is 31886236.

It can be written as a sum of positive squares in 4 ways, for example, as 277855561 + 354832569 = 16669^2 + 18837^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 632688130.

It is not an unprimeable number, because it can be changed into a prime (632688131) 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, 278821 + ... + 281080.

Almost surely, 2^632688130 is an apocalyptic number.

632688130 is a deficient number, since it is larger than the sum of its proper divisors (516230774).

632688130 is a wasteful number, since it uses less digits than its factorization.

632688130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560021.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 632688130 is about 25153.2926274076. The cubic root of 632688130 is about 858.4794340382.

The spelling of 632688130 in words is "six hundred thirty-two million, six hundred eighty-eight thousand, one hundred thirty".