689789694 has 32 divisors (see below), whose sum is σ = 1521918720. Its totient is φ = 206676800.

The previous prime is 689789669. The next prime is 689789741. The reversal of 689789694 is 496987986.

It is a super-2 number, since 2×689789694² = 951619643897227272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52842 + ... + 64589.

It is an arithmetic number, because the mean of its divisors is an integer number (47559960).

Almost surely, 2^689789694 is an apocalyptic number.

689789694 is an abundant number, since it is smaller than the sum of its proper divisors (832129026).

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

689789694 is a wasteful number, since it uses less digits than its factorization.

689789694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117536.

The product of its digits is 47029248, while the sum is 66.

The square root of 689789694 is about 26263.8476617574. The cubic root of 689789694 is about 883.5658062709.

The spelling of 689789694 in words is "six hundred eighty-nine million, seven hundred eighty-nine thousand, six hundred ninety-four".