689712 has 20 divisors (see below), whose sum is σ = 1781880. Its totient is φ = 229888.

The previous prime is 689699. The next prime is 689713. The reversal of 689712 is 217986.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (689713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7137 + ... + 7232.

It is an arithmetic number, because the mean of its divisors is an integer number (89094).

2⁶⁸⁹⁷¹² is an apocalyptic number.

It is an amenable number.

689712 is an abundant number, since it is smaller than the sum of its proper divisors (1092168).

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

689712 is a wasteful number, since it uses less digits than its factorization.

689712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14380 (or 14374 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 689712 is about 830.4890125703. The cubic root of 689712 is about 88.3532631744.

The spelling of 689712 in words is "six hundred eighty-nine thousand, seven hundred twelve".