689765694 has 16 divisors (see below), whose sum is σ = 1383488400. Its totient is φ = 229262400.

The previous prime is 689765627. The next prime is 689765719. The reversal of 689765694 is 496567986.

It is a congruent number.

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, 162607 + ... + 166794.

It is an arithmetic number, because the mean of its divisors is an integer number (86468025).

Almost surely, 2^689765694 is an apocalyptic number.

689765694 is an abundant number, since it is smaller than the sum of its proper divisors (693722706).

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

689765694 is a wasteful number, since it uses less digits than its factorization.

689765694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329755.

The product of its digits is 19595520, while the sum is 60.

The square root of 689765694 is about 26263.3907559553. The cubic root of 689765694 is about 883.5555587875. Note that the first 5 decimals are identical.

The spelling of 689765694 in words is "six hundred eighty-nine million, seven hundred sixty-five thousand, six hundred ninety-four".