706685220 has 72 divisors (see below), whose sum is σ = 2193487296. Its totient is φ = 184064832.

The previous prime is 706685219. The next prime is 706685251. The reversal of 706685220 is 22586607.

706685220 is a `hidden beast` number, since 70 + 6 + 68 + 522 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37912 + ... + 53391.

Almost surely, 2^706685220 is an apocalyptic number.

It is an amenable number.

706685220 is an abundant number, since it is smaller than the sum of its proper divisors (1486802076).

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

706685220 is a wasteful number, since it uses less digits than its factorization.

706685220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91361 (or 91356 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 706685220 is about 26583.5516814439. The cubic root of 706685220 is about 890.7216383411.

The spelling of 706685220 in words is "seven hundred six million, six hundred eighty-five thousand, two hundred twenty".