705940640 has 48 divisors (see below), whose sum is σ = 1765896552. Its totient is φ = 265764864.

The previous prime is 705940639. The next prime is 705940673. The reversal of 705940640 is 46049507.

It can be written as a sum of positive squares in 4 ways, for example, as 665846416 + 40094224 = 25804^2 + 6332^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 705940640.

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, 127049 + ... + 132488.

Almost surely, 2^705940640 is an apocalyptic number.

It is an amenable number.

705940640 is an abundant number, since it is smaller than the sum of its proper divisors (1059955912).

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

705940640 is a wasteful number, since it uses less digits than its factorization.

705940640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259569 (or 259561 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 705940640 is about 26569.5434661569. The cubic root of 705940640 is about 890.4087000574.

The spelling of 705940640 in words is "seven hundred five million, nine hundred forty thousand, six hundred forty".