68140260 has 144 divisors (see below), whose sum is σ = 219098880. Its totient is φ = 17107200.

The previous prime is 68140253. The next prime is 68140291. The reversal of 68140260 is 6204186.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 451185 + ... + 451335.

It is an arithmetic number, because the mean of its divisors is an integer number (1521520).

Almost surely, 2^68140260 is an apocalyptic number.

68140260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68140260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109549440).

68140260 is an abundant number, since it is smaller than the sum of its proper divisors (150958620).

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

68140260 is a wasteful number, since it uses less digits than its factorization.

68140260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 68140260 is about 8254.7113819927. The cubic root of 68140260 is about 408.4459512594.

The spelling of 68140260 in words is "sixty-eight million, one hundred forty thousand, two hundred sixty".