689392 has 20 divisors (see below), whose sum is σ = 1457496. Its totient is φ = 313280.

The previous prime is 689389. The next prime is 689393. The reversal of 689392 is 293986.

It is a super-2 number, since 2×689392² = 950522659328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1783 + ... + 2134.

2⁶⁸⁹³⁹² is an apocalyptic number.

It is an amenable number.

689392 is an abundant number, since it is smaller than the sum of its proper divisors (768104).

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

689392 is a wasteful number, since it uses less digits than its factorization.

689392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936 (or 3930 counting only the distinct ones).

The product of its digits is 23328, while the sum is 37.

The square root of 689392 is about 830.2963326427. The cubic root of 689392 is about 88.3395968819.

It can be divided in two parts, 689 and 392, that added together give a triangular number (1081 = T₄₆).

The spelling of 689392 in words is "six hundred eighty-nine thousand, three hundred ninety-two".