68152218 has 16 divisors (see below), whose sum is σ = 144322560. Its totient is φ = 21381056.

The previous prime is 68152177. The next prime is 68152219. The reversal of 68152218 is 81225186.

It is not an unprimeable number, because it can be changed into a prime (68152219) 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, 333978 + ... + 334181.

It is an arithmetic number, because the mean of its divisors is an integer number (9020160).

Almost surely, 2^68152218 is an apocalyptic number.

68152218 is an abundant number, since it is smaller than the sum of its proper divisors (76170342).

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

68152218 is a wasteful number, since it uses less digits than its factorization.

68152218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668181.

The product of its digits is 7680, while the sum is 33.

The square root of 68152218 is about 8255.4356638520. The cubic root of 68152218 is about 408.4698427200.

The spelling of 68152218 in words is "sixty-eight million, one hundred fifty-two thousand, two hundred eighteen".