68280320 has 56 divisors (see below), whose sum is σ = 163961064. Its totient is φ = 27295744.

The previous prime is 68280299. The next prime is 68280341. The reversal of 68280320 is 2308286.

It is an interprime number because it is at equal distance from previous prime (68280299) and next prime (68280341).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40127 + ... + 41793.

Almost surely, 2^68280320 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 68280320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81980532).

68280320 is an abundant number, since it is smaller than the sum of its proper divisors (95680744).

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

68280320 is an equidigital number, since it uses as much as digits as its factorization.

68280320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698 (or 1674 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 68280320 is about 8263.1906670487. The cubic root of 68280320 is about 408.7256086846.

The spelling of 68280320 in words is "sixty-eight million, two hundred eighty thousand, three hundred twenty".