630839406 has 16 divisors (see below), whose sum is σ = 1328083200. Its totient is φ = 199212408.

The previous prime is 630839401. The next prime is 630839413. The reversal of 630839406 is 604938036.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630839401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2766726 + ... + 2766953.

It is an arithmetic number, because the mean of its divisors is an integer number (83005200).

Almost surely, 2^630839406 is an apocalyptic number.

630839406 is an abundant number, since it is smaller than the sum of its proper divisors (697243794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

630839406 is a wasteful number, since it uses less digits than its factorization.

630839406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5533703.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 630839406 is about 25116.5165976494. The cubic root of 630839406 is about 857.6424551186.

The spelling of 630839406 in words is "six hundred thirty million, eight hundred thirty-nine thousand, four hundred six".