689464 has 8 divisors (see below), whose sum is σ = 1292760. Its totient is φ = 344728.

The previous prime is 689461. The next prime is 689467. The reversal of 689464 is 464986.

It is an interprime number because it is at equal distance from previous prime (689461) and next prime (689467).

It is a tau number, because it is divible by the number of its divisors (8).

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 (689461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43084 + ... + 43099.

It is an arithmetic number, because the mean of its divisors is an integer number (161595).

2⁶⁸⁹⁴⁶⁴ is an apocalyptic number.

It is an amenable number.

689464 is a deficient number, since it is larger than the sum of its proper divisors (603296).

689464 is a wasteful number, since it uses less digits than its factorization.

689464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86189 (or 86185 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 689464 is about 830.3396895247. The cubic root of 689464 is about 88.3426721664.

The spelling of 689464 in words is "six hundred eighty-nine thousand, four hundred sixty-four".