689775492 has 24 divisors (see below), whose sum is σ = 1839401536. Its totient is φ = 197078688.

The previous prime is 689775461. The next prime is 689775503. The reversal of 689775492 is 294577986.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4105723 + ... + 4105890.

Almost surely, 2^689775492 is an apocalyptic number.

It is an amenable number.

689775492 is an abundant number, since it is smaller than the sum of its proper divisors (1149626044).

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

689775492 is a wasteful number, since it uses less digits than its factorization.

689775492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8211627 (or 8211625 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 57.

The square root of 689775492 is about 26263.5772887092. The cubic root of 689775492 is about 883.5597423513.

The spelling of 689775492 in words is "six hundred eighty-nine million, seven hundred seventy-five thousand, four hundred ninety-two".