689694 has 16 divisors (see below), whose sum is σ = 1399680. Its totient is φ = 226520.

The previous prime is 689693. The next prime is 689699. The reversal of 689694 is 496986.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 689694.

It is not an unprimeable number, because it can be changed into a prime (689693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384 + ... + 1235.

It is an arithmetic number, because the mean of its divisors is an integer number (87480).

2⁶⁸⁹⁶⁹⁴ is an apocalyptic number.

689694 is an abundant number, since it is smaller than the sum of its proper divisors (709986).

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

689694 is a wasteful number, since it uses less digits than its factorization.

689694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695.

The product of its digits is 93312, while the sum is 42.

The square root of 689694 is about 830.4781755110. The cubic root of 689694 is about 88.3524945577.

The spelling of 689694 in words is "six hundred eighty-nine thousand, six hundred ninety-four".