68775872 has 56 divisors (see below), whose sum is σ = 149912832. Its totient is φ = 31046400.

The previous prime is 68775871. The next prime is 68775893. The reversal of 68775872 is 27857786.

It is a self number, because there is not a number n which added to its sum of digits gives 68775872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68775871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148313 + ... + 148775.

Almost surely, 2^68775872 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 68775872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74956416).

68775872 is an abundant number, since it is smaller than the sum of its proper divisors (81136960).

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

68775872 is a wasteful number, since it uses less digits than its factorization.

68775872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697 (or 687 counting only the distinct ones).

The product of its digits is 1317120, while the sum is 50.

The square root of 68775872 is about 8293.1219694395. The cubic root of 68775872 is about 409.7120166857.

The spelling of 68775872 in words is "sixty-eight million, seven hundred seventy-five thousand, eight hundred seventy-two".