68688396 has 108 divisors (see below), whose sum is σ = 210882672. Its totient is φ = 18760896.

The previous prime is 68688377. The next prime is 68688437. The reversal of 68688396 is 69388686.

Its product of digits (2985984) is a multiple of the sum of its prime divisors (1728).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 39726 + ... + 41418.

Almost surely, 2^68688396 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 68688396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105441336).

68688396 is an abundant number, since it is smaller than the sum of its proper divisors (142194276).

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

68688396 is a wasteful number, since it uses less digits than its factorization.

68688396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740 (or 1728 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 68688396 is about 8287.8462823583. The cubic root of 68688396 is about 409.5382388136.

The spelling of 68688396 in words is "sixty-eight million, six hundred eighty-eight thousand, three hundred ninety-six".