689888 has 12 divisors (see below), whose sum is σ = 1358280. Its totient is φ = 344928.

The previous prime is 689879. The next prime is 689891. The reversal of 689888 is 888986.

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 689888.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10748 + ... + 10811.

It is an arithmetic number, because the mean of its divisors is an integer number (113190).

2⁶⁸⁹⁸⁸⁸ is an apocalyptic number.

It is an amenable number.

689888 is a deficient number, since it is larger than the sum of its proper divisors (668392).

689888 is a wasteful number, since it uses less digits than its factorization.

689888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21569 (or 21561 counting only the distinct ones).

The product of its digits is 221184, while the sum is 47.

The square root of 689888 is about 830.5949674781. The cubic root of 689888 is about 88.3607778336.

The spelling of 689888 in words is "six hundred eighty-nine thousand, eight hundred eighty-eight".