630513137 has 4 divisors (see below), whose sum is σ = 630625956. Its totient is φ = 630400320.

The previous prime is 630513133. The next prime is 630513193. The reversal of 630513137 is 731315036.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 590684416 + 39828721 = 24304^2 + 6311^2 .

It is a cyclic number.

It is not a de Polignac number, because 630513137 - 2² = 630513133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630513133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47564 + ... + 59357.

It is an arithmetic number, because the mean of its divisors is an integer number (157656489).

Almost surely, 2^630513137 is an apocalyptic number.

It is an amenable number.

630513137 is a deficient number, since it is larger than the sum of its proper divisors (112819).

630513137 is a wasteful number, since it uses less digits than its factorization.

630513137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112818.

The product of its (nonzero) digits is 5670, while the sum is 29.

The square root of 630513137 is about 25110.0206491353. The cubic root of 630513137 is about 857.4945725785.

The spelling of 630513137 in words is "six hundred thirty million, five hundred thirteen thousand, one hundred thirty-seven".