691952 has 20 divisors (see below), whose sum is σ = 1365240. Its totient is φ = 339648.

The previous prime is 691949. The next prime is 691973. The reversal of 691952 is 259196.

691952 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 inconsummate number, since it does not exist a number n which divided by its sum of digits gives 691952.

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, 578 + ... + 1310.

It is an arithmetic number, because the mean of its divisors is an integer number (68262).

2⁶⁹¹⁹⁵² is an apocalyptic number.

It is an amenable number.

691952 is a deficient number, since it is larger than the sum of its proper divisors (673288).

691952 is a wasteful number, since it uses less digits than its factorization.

691952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800 (or 794 counting only the distinct ones).

The product of its digits is 4860, while the sum is 32.

The square root of 691952 is about 831.8365224009. The cubic root of 691952 is about 88.4488090646.

The spelling of 691952 in words is "six hundred ninety-one thousand, nine hundred fifty-two".