684791152 has 20 divisors (see below), whose sum is σ = 1372534920. Its totient is φ = 330588608.

The previous prime is 684791131. The next prime is 684791189. The reversal of 684791152 is 251197486.

It is a junction number, because it is equal to n+sod(n) for n = 684791099 and 684791108.

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, 737458 + ... + 738385.

It is an arithmetic number, because the mean of its divisors is an integer number (68626746).

Almost surely, 2^684791152 is an apocalyptic number.

It is an amenable number.

684791152 is an abundant number, since it is smaller than the sum of its proper divisors (687743768).

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

684791152 is a wasteful number, since it uses less digits than its factorization.

684791152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475880 (or 1475874 counting only the distinct ones).

The product of its digits is 120960, while the sum is 43.

The square root of 684791152 is about 26168.5145164948. The cubic root of 684791152 is about 881.4263850816.

The spelling of 684791152 in words is "six hundred eighty-four million, seven hundred ninety-one thousand, one hundred fifty-two".