689716224 has 132 divisors (see below), whose sum is σ = 2023074664. Its totient is φ = 226271232.

The previous prime is 689716219. The next prime is 689716243. The reversal of 689716224 is 422617986.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 689716224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 616914 + ... + 618030.

Almost surely, 2^689716224 is an apocalyptic number.

689716224 is a gapful number since it is divisible by the number (64) 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 689716224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1011537332).

689716224 is an abundant number, since it is smaller than the sum of its proper divisors (1333358440).

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

689716224 is a wasteful number, since it uses less digits than its factorization.

689716224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210 (or 1189 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 689716224 is about 26262.4489337914. The cubic root of 689716224 is about 883.5344354124.

The spelling of 689716224 in words is "six hundred eighty-nine million, seven hundred sixteen thousand, two hundred twenty-four".