630774885637 has 6 divisors (see below), whose sum is σ = 683028426642. Its totient is φ = 582253740432.

The previous prime is 630774885599. The next prime is 630774885647. The reversal of 630774885637 is 736588477036.

630774885637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 32822206561 + 597952679076 = 181169^2 + 773274^2 .

It is a de Polignac number, because none of the positive numbers 2^k-630774885637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630774885647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1866197718 + ... + 1866198055.

It is an arithmetic number, because the mean of its divisors is an integer number (113838071107).

Almost surely, 2^630774885637 is an apocalyptic number.

It is an amenable number.

630774885637 is a deficient number, since it is larger than the sum of its proper divisors (52253541005).

630774885637 is a wasteful number, since it uses less digits than its factorization.

630774885637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3732395799 (or 3732395786 counting only the distinct ones).

The product of its (nonzero) digits is 142248960, while the sum is 64.

It can be divided in two parts, 630774 and 885637, that added together give a triangular number (1516411 = T₁₇₄₁).

The spelling of 630774885637 in words is "six hundred thirty billion, seven hundred seventy-four million, eight hundred eighty-five thousand, six hundred thirty-seven".