68423688 has 24 divisors (see below), whose sum is σ = 185314350. Its totient is φ = 22807872.

The previous prime is 68423669. The next prime is 68423699. The reversal of 68423688 is 88632486.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 38415204 + 30008484 = 6198^2 + 5478^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 475093 + ... + 475236.

Almost surely, 2^68423688 is an apocalyptic number.

It is an amenable number.

68423688 is an abundant number, since it is smaller than the sum of its proper divisors (116890662).

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

68423688 is a wasteful number, since it uses less digits than its factorization.

68423688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950341 (or 950334 counting only the distinct ones).

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

The square root of 68423688 is about 8271.8612174045. The cubic root of 68423688 is about 409.0114753786.

The spelling of 68423688 in words is "sixty-eight million, four hundred twenty-three thousand, six hundred eighty-eight".