68812180 has 12 divisors (see below), whose sum is σ = 144505620. Its totient is φ = 27524864.

The previous prime is 68812153. The next prime is 68812181. The reversal of 68812180 is 8121886.

It can be written as a sum of positive squares in 2 ways, for example, as 7409284 + 61402896 = 2722^2 + 7836^2 .

It is a super-2 number, since 2×68812180² = 9470232232704800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68812181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1720285 + ... + 1720324.

It is an arithmetic number, because the mean of its divisors is an integer number (12042135).

Almost surely, 2^68812180 is an apocalyptic number.

It is an amenable number.

68812180 is an abundant number, since it is smaller than the sum of its proper divisors (75693440).

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

68812180 is a wasteful number, since it uses less digits than its factorization.

68812180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3440618 (or 3440616 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 34.

The square root of 68812180 is about 8295.3107235353. The cubic root of 68812180 is about 409.7841020770.

The spelling of 68812180 in words is "sixty-eight million, eight hundred twelve thousand, one hundred eighty".