691692 has 12 divisors (see below), whose sum is σ = 1613976. Its totient is φ = 230560.

The previous prime is 691687. The next prime is 691693. The reversal of 691692 is 296196.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 691692.

It is not an unprimeable number, because it can be changed into a prime (691693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28809 + ... + 28832.

It is an arithmetic number, because the mean of its divisors is an integer number (134498).

2⁶⁹¹⁶⁹² is an apocalyptic number.

It is an amenable number.

691692 is an abundant number, since it is smaller than the sum of its proper divisors (922284).

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

691692 is a wasteful number, since it uses less digits than its factorization.

691692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57648 (or 57646 counting only the distinct ones).

The product of its digits is 5832, while the sum is 33.

The square root of 691692 is about 831.6802270104. The cubic root of 691692 is about 88.4377295045.

The spelling of 691692 in words is "six hundred ninety-one thousand, six hundred ninety-two".