630637937 has 4 divisors (see below), whose sum is σ = 642536820. Its totient is φ = 618739056.

The previous prime is 630637927. The next prime is 630637993. The reversal of 630637937 is 739736036.

630637937 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 174345616 + 456292321 = 13204^2 + 21361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630637937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630637927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5949362 + ... + 5949467.

It is an arithmetic number, because the mean of its divisors is an integer number (160634205).

Almost surely, 2^630637937 is an apocalyptic number.

It is an amenable number.

630637937 is a deficient number, since it is larger than the sum of its proper divisors (11898883).

630637937 is a wasteful number, since it uses less digits than its factorization.

630637937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11898882.

The product of its (nonzero) digits is 428652, while the sum is 44.

The square root of 630637937 is about 25112.5055898451. The cubic root of 630637937 is about 857.5511446289.

The spelling of 630637937 in words is "six hundred thirty million, six hundred thirty-seven thousand, nine hundred thirty-seven".