630991706 has 16 divisors (see below), whose sum is σ = 1001173824. Its totient is φ = 297643104.

The previous prime is 630991687. The next prime is 630991717. The reversal of 630991706 is 607199036.

It is a happy number.

630991706 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90596 + ... + 97311.

It is an arithmetic number, because the mean of its divisors is an integer number (62573364).

Almost surely, 2^630991706 is an apocalyptic number.

630991706 is a deficient number, since it is larger than the sum of its proper divisors (370182118).

630991706 is a wasteful number, since it uses less digits than its factorization.

630991706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188005.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 630991706 is about 25119.5482841551. The cubic root of 630991706 is about 857.7114681588.

The spelling of 630991706 in words is "six hundred thirty million, nine hundred ninety-one thousand, seven hundred six".