629987872 has 12 divisors (see below), whose sum is σ = 1240288686. Its totient is φ = 314993920.

The previous prime is 629987867. The next prime is 629987873. The reversal of 629987872 is 278789926.

It can be written as a sum of positive squares in only one way, i.e., 328479376 + 301508496 = 18124^2 + 17364^2 .

It is not an unprimeable number, because it can be changed into a prime (629987873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9843529 + ... + 9843592.

Almost surely, 2^629987872 is an apocalyptic number.

It is an amenable number.

629987872 is a deficient number, since it is larger than the sum of its proper divisors (610300814).

629987872 is a wasteful number, since it uses less digits than its factorization.

629987872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19687131 (or 19687123 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 58.

The square root of 629987872 is about 25099.5591993166. The cubic root of 629987872 is about 857.2563872055.

The spelling of 629987872 in words is "six hundred twenty-nine million, nine hundred eighty-seven thousand, eight hundred seventy-two".