68013008 has 80 divisors (see below), whose sum is σ = 163799040. Its totient is φ = 26697600.

The previous prime is 68012983. The next prime is 68013037. The reversal of 68013008 is 80031086.

It is a Cunningham number, because it is equal to 8247²-1.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65453 + ... + 66483.

It is an arithmetic number, because the mean of its divisors is an integer number (2047488).

Almost surely, 2^68013008 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 68013008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81899520).

68013008 is an abundant number, since it is smaller than the sum of its proper divisors (95786032).

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

68013008 is a wasteful number, since it uses less digits than its factorization.

68013008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096 (or 1090 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 68013008 is about 8246.9999393719. Note that the first 4 decimals coincide. The cubic root of 68013008 is about 408.1915350860.

The spelling of 68013008 in words is "sixty-eight million, thirteen thousand, eight".