689494680 has 480 divisors, whose sum is σ = 2785836240. Its totient is φ = 152409600.

The previous prime is 689494643. The next prime is 689494697. The reversal of 689494680 is 86494986.

It is a super-3 number, since 3×689494680³ (a number of 27 digits) contains 333 as substring.

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

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 6826630 + ... + 6826730.

Almost surely, 2^689494680 is an apocalyptic number.

689494680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689494680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1392918120).

689494680 is an abundant number, since it is smaller than the sum of its proper divisors (2096341560).

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

689494680 is a wasteful number, since it uses less digits than its factorization.

689494680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The square root of 689494680 is about 26258.2307096270. The cubic root of 689494680 is about 883.4398251423.

The spelling of 689494680 in words is "six hundred eighty-nine million, four hundred ninety-four thousand, six hundred eighty".