681952 has 24 divisors (see below), whose sum is σ = 1362312. Its totient is φ = 336000.

The previous prime is 681949. The next prime is 681971. The reversal of 681952 is 259186.

681952 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 3127 + ... + 3337.

It is an arithmetic number, because the mean of its divisors is an integer number (56763).

2⁶⁸¹⁹⁵² is an apocalyptic number.

It is an amenable number.

681952 is a deficient number, since it is larger than the sum of its proper divisors (680360).

681952 is a wasteful number, since it uses less digits than its factorization.

681952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 314 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

The square root of 681952 is about 825.8038508024. The cubic root of 681952 is about 88.0206563080.

The spelling of 681952 in words is "six hundred eighty-one thousand, nine hundred fifty-two".