706633640 has 16 divisors (see below), whose sum is σ = 1589925780. Its totient is φ = 282653440.

The previous prime is 706633621. The next prime is 706633717. The reversal of 706633640 is 46336607.

It can be written as a sum of positive squares in 2 ways, for example, as 642216964 + 64416676 = 25342^2 + 8026^2 .

It is a super-2 number, since 2×706633640² = 998662202359299200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 706633640.

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, 8832881 + ... + 8832960.

Almost surely, 2^706633640 is an apocalyptic number.

It is an amenable number.

706633640 is an abundant number, since it is smaller than the sum of its proper divisors (883292140).

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

706633640 is a wasteful number, since it uses less digits than its factorization.

706633640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17665852 (or 17665848 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 35.

The square root of 706633640 is about 26582.5815149695. The cubic root of 706633640 is about 890.6999669573.

The spelling of 706633640 in words is "seven hundred six million, six hundred thirty-three thousand, six hundred forty".