689685532 has 6 divisors (see below), whose sum is σ = 1206949688. Its totient is φ = 344842764.

The previous prime is 689685527. The next prime is 689685533. The reversal of 689685532 is 235586986.

It is a super-2 number, since 2×689685532² = 951332266100246048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 689685532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689685533) by changing a digit.

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 as a sum of consecutive naturals, namely, 86210688 + ... + 86210695.

Almost surely, 2^689685532 is an apocalyptic number.

It is an amenable number.

689685532 is a deficient number, since it is larger than the sum of its proper divisors (517264156).

689685532 is a wasteful number, since it uses less digits than its factorization.

689685532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172421387 (or 172421385 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 52.

The square root of 689685532 is about 26261.8645948836. The cubic root of 689685532 is about 883.5213296160.

The spelling of 689685532 in words is "six hundred eighty-nine million, six hundred eighty-five thousand, five hundred thirty-two".