689789760 has 224 divisors, whose sum is σ = 2421038592. Its totient is φ = 164997120.

The previous prime is 689789741. The next prime is 689789797. The reversal of 689789760 is 67987986.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 689789694 and 689789703.

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 31 ways as a sum of consecutive naturals, for example, 876087 + ... + 876873.

It is an arithmetic number, because the mean of its divisors is an integer number (10808208).

Almost surely, 2^689789760 is an apocalyptic number.

689789760 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 689789760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1210519296).

689789760 is an abundant number, since it is smaller than the sum of its proper divisors (1731248832).

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

689789760 is a wasteful number, since it uses less digits than its factorization.

689789760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901 (or 891 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 60.

The square root of 689789760 is about 26263.8489182374. The cubic root of 689789760 is about 883.5658344511.

The spelling of 689789760 in words is "six hundred eighty-nine million, seven hundred eighty-nine thousand, seven hundred sixty".