706630640 has 20 divisors (see below), whose sum is σ = 1642916424. Its totient is φ = 282652224.

The previous prime is 706630549. The next prime is 706630651. The reversal of 706630640 is 46036607.

706630640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×706630640² = 998653722773619200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 706630597 and 706630606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4416362 + ... + 4416521.

Almost surely, 2^706630640 is an apocalyptic number.

It is an amenable number.

706630640 is an abundant number, since it is smaller than the sum of its proper divisors (936285784).

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

706630640 is a wasteful number, since it uses less digits than its factorization.

706630640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8832896 (or 8832890 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 706630640 is about 26582.5250869815. The cubic root of 706630640 is about 890.6987064721.

The spelling of 706630640 in words is "seven hundred six million, six hundred thirty thousand, six hundred forty".