689926 has 4 divisors (see below), whose sum is σ = 1034892. Its totient is φ = 344962.

The previous prime is 689921. The next prime is 689929. The reversal of 689926 is 629986.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172480 + ... + 172483.

It is an arithmetic number, because the mean of its divisors is an integer number (258723).

2⁶⁸⁹⁹²⁶ is an apocalyptic number.

689926 is a deficient number, since it is larger than the sum of its proper divisors (344966).

689926 is a wasteful number, since it uses less digits than its factorization.

689926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344965.

The product of its digits is 46656, while the sum is 40.

The square root of 689926 is about 830.6178423318. The cubic root of 689926 is about 88.3624001491.

The spelling of 689926 in words is "six hundred eighty-nine thousand, nine hundred twenty-six".