689225760 has 336 divisors, whose sum is σ = 2578080960. Its totient is φ = 173560320.

The previous prime is 689225753. The next prime is 689225773. The reversal of 689225760 is 67522986.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 2216005 + ... + 2216315.

It is an arithmetic number, because the mean of its divisors is an integer number (7672860).

Almost surely, 2^689225760 is an apocalyptic number.

689225760 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 689225760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1289040480).

689225760 is an abundant number, since it is smaller than the sum of its proper divisors (1888855200).

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

689225760 is a wasteful number, since it uses less digits than its factorization.

689225760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 689225760 is about 26253.1095301109. The cubic root of 689225760 is about 883.3249557372.

The spelling of 689225760 in words is "six hundred eighty-nine million, two hundred twenty-five thousand, seven hundred sixty".