689474790 has 48 divisors (see below), whose sum is σ = 1810063008. Its totient is φ = 182072448.

The previous prime is 689474789. The next prime is 689474801. The reversal of 689474790 is 97474986.

It is a happy number.

689474790 is a `hidden beast` number, since 6 + 89 + 474 + 7 + 90 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27919 + ... + 46458.

It is an arithmetic number, because the mean of its divisors is an integer number (37709646).

Almost surely, 2^689474790 is an apocalyptic number.

689474790 is an abundant number, since it is smaller than the sum of its proper divisors (1120588218).

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

689474790 is a wasteful number, since it uses less digits than its factorization.

689474790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74493 (or 74490 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The square root of 689474790 is about 26257.8519685065. The cubic root of 689474790 is about 883.4313301349.

It can be divided in two parts, 68947 and 4790, that added together give a palindrome (73737).

The spelling of 689474790 in words is "six hundred eighty-nine million, four hundred seventy-four thousand, seven hundred ninety".