689363136 has 420 divisors, whose sum is σ = 2583377104. Its totient is φ = 177914880.

The previous prime is 689363131. The next prime is 689363159. The reversal of 689363136 is 631363986.

689363136 is a `hidden beast` number, since 6 + 8 + 9 + 3 + 631 + 3 + 6 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 689363091 and 689363100.

It is not an unprimeable number, because it can be changed into a prime (689363131) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 4390770 + ... + 4390926.

Almost surely, 2^689363136 is an apocalyptic number.

689363136 is a gapful number since it is divisible by the number (66) 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 689363136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1291688552).

689363136 is an abundant number, since it is smaller than the sum of its proper divisors (1894013968).

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

689363136 is a wasteful number, since it uses less digits than its factorization.

689363136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 180 counting only the distinct ones).

The product of its digits is 419904, while the sum is 45.

The square root of 689363136 is about 26255.7257755332. The cubic root of 689363136 is about 883.3836397440.

The spelling of 689363136 in words is "six hundred eighty-nine million, three hundred sixty-three thousand, one hundred thirty-six".