68432688 has 70 divisors (see below), whose sum is σ = 198825444. Its totient is φ = 22807008.

The previous prime is 68432681. The next prime is 68432719. The reversal of 68432688 is 88623486.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (68432681) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 8731 + ... + 14597.

Almost surely, 2^68432688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68432688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99412722).

68432688 is an abundant number, since it is smaller than the sum of its proper divisors (130392756).

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

68432688 is an equidigital number, since it uses as much as digits as its factorization.

68432688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5893 (or 5872 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 68432688 is about 8272.4052125123. The cubic root of 68432688 is about 409.0294074818.

The spelling of 68432688 in words is "sixty-eight million, four hundred thirty-two thousand, six hundred eighty-eight".