689882670 has 80 divisors (see below), whose sum is σ = 1873254240. Its totient is φ = 182160576.

The previous prime is 689882639. The next prime is 689882681. The reversal of 689882670 is 76288986.

689882670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 79296 + ... + 87564.

It is an arithmetic number, because the mean of its divisors is an integer number (23415678).

Almost surely, 2^689882670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689882670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (936627120).

689882670 is an abundant number, since it is smaller than the sum of its proper divisors (1183371570).

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

689882670 is a wasteful number, since it uses less digits than its factorization.

689882670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8391 (or 8382 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The square root of 689882670 is about 26265.6176397967. The cubic root of 689882670 is about 883.6055027776.

The spelling of 689882670 in words is "six hundred eighty-nine million, eight hundred eighty-two thousand, six hundred seventy".