705634872 has 32 divisors (see below), whose sum is σ = 1781220480. Its totient is φ = 232927200.

The previous prime is 705634843. The next prime is 705634907. The reversal of 705634872 is 278436507.

It is a congruent number.

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, 140254 + ... + 145197.

It is an arithmetic number, because the mean of its divisors is an integer number (55663140).

Almost surely, 2^705634872 is an apocalyptic number.

It is an amenable number.

705634872 is an abundant number, since it is smaller than the sum of its proper divisors (1075585608).

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

705634872 is a wasteful number, since it uses less digits than its factorization.

705634872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285563 (or 285559 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 42.

The square root of 705634872 is about 26563.7887357960. The cubic root of 705634872 is about 890.2801255995.

The spelling of 705634872 in words is "seven hundred five million, six hundred thirty-four thousand, eight hundred seventy-two".