630989934 has 64 divisors (see below), whose sum is σ = 1346783232. Its totient is φ = 196732800.

The previous prime is 630989839. The next prime is 630990001. The reversal of 630989934 is 439989036.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1906149 + ... + 1906479.

It is an arithmetic number, because the mean of its divisors is an integer number (21043488).

Almost surely, 2^630989934 is an apocalyptic number.

630989934 is an abundant number, since it is smaller than the sum of its proper divisors (715793298).

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

630989934 is a wasteful number, since it uses less digits than its factorization.

630989934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681.

The product of its (nonzero) digits is 1259712, while the sum is 51.

The square root of 630989934 is about 25119.5130127955. The cubic root of 630989934 is about 857.7106652607.

The spelling of 630989934 in words is "six hundred thirty million, nine hundred eighty-nine thousand, nine hundred thirty-four".