630555136 has 20 divisors (see below), whose sum is σ = 1259879742. Its totient is φ = 315277312.

The previous prime is 630555131. The next prime is 630555137. The reversal of 630555136 is 631555036.

It can be written as a sum of positive squares in only one way, i.e., 472801536 + 157753600 = 21744^2 + 12560^2 .

It is not an unprimeable number, because it can be changed into a prime (630555131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615265 + ... + 616288.

Almost surely, 2^630555136 is an apocalyptic number.

It is an amenable number.

630555136 is a deficient number, since it is larger than the sum of its proper divisors (629324606).

630555136 is an equidigital number, since it uses as much as digits as its factorization.

630555136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231571 (or 1231555 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 34.

The square root of 630555136 is about 25110.8569348001. The cubic root of 630555136 is about 857.5136116293.

The spelling of 630555136 in words is "six hundred thirty million, five hundred fifty-five thousand, one hundred thirty-six".