689183040 has 560 divisors, whose sum is σ = 2868582528. Its totient is φ = 139087872.

The previous prime is 689183039. The next prime is 689183051. The reversal of 689183040 is 40381986.

It is a tau number, because it is divible by the number of its divisors (560).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 689183040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 29964469 + ... + 29964491.

Almost surely, 2^689183040 is an apocalyptic number.

689183040 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 689183040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1434291264).

689183040 is an abundant number, since it is smaller than the sum of its proper divisors (2179399488).

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

689183040 is a wasteful number, since it uses less digits than its factorization.

689183040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 689183040 is about 26252.2958995970. The cubic root of 689183040 is about 883.3067051029.

The spelling of 689183040 in words is "six hundred eighty-nine million, one hundred eighty-three thousand, forty".