630625837 has 4 divisors (see below), whose sum is σ = 644043456. Its totient is φ = 617208220.

The previous prime is 630625819. The next prime is 630625841. The reversal of 630625837 is 738526036.

630625837 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 630625837 - 2¹⁵ = 630593069 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 630625837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630625867) 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, 6708739 + ... + 6708832.

It is an arithmetic number, because the mean of its divisors is an integer number (161010864).

Almost surely, 2^630625837 is an apocalyptic number.

It is an amenable number.

630625837 is a deficient number, since it is larger than the sum of its proper divisors (13417619).

630625837 is a wasteful number, since it uses less digits than its factorization.

630625837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13417618.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 630625837 is about 25112.2646728645. The cubic root of 630625837 is about 857.5456600052.

The spelling of 630625837 in words is "six hundred thirty million, six hundred twenty-five thousand, eight hundred thirty-seven".