68839456 has 48 divisors (see below), whose sum is σ = 155796480. Its totient is φ = 29329920.

The previous prime is 68839447. The next prime is 68839457. The reversal of 68839456 is 65493886.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68839457) 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, 41980 + ... + 43588.

It is an arithmetic number, because the mean of its divisors is an integer number (3245760).

Almost surely, 2^68839456 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 68839456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77898240).

68839456 is an abundant number, since it is smaller than the sum of its proper divisors (86957024).

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

68839456 is a wasteful number, since it uses less digits than its factorization.

68839456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817 (or 1809 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 49.

The square root of 68839456 is about 8296.9546220285. The cubic root of 68839456 is about 409.8382387849.

The spelling of 68839456 in words is "sixty-eight million, eight hundred thirty-nine thousand, four hundred fifty-six".