68815180 has 24 divisors (see below), whose sum is σ = 165156768. Its totient is φ = 23593728.

The previous prime is 68815163. The next prime is 68815183. The reversal of 68815180 is 8151886.

It is not an unprimeable number, because it can be changed into a prime (68815183) 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, 245629 + ... + 245908.

It is an arithmetic number, because the mean of its divisors is an integer number (6881532).

Almost surely, 2^68815180 is an apocalyptic number.

It is an amenable number.

68815180 is an abundant number, since it is smaller than the sum of its proper divisors (96341588).

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

68815180 is a wasteful number, since it uses less digits than its factorization.

68815180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491553 (or 491551 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 37.

The square root of 68815180 is about 8295.4915466174. The cubic root of 68815180 is about 409.7900571004.

The spelling of 68815180 in words is "sixty-eight million, eight hundred fifteen thousand, one hundred eighty".