68115222 has 64 divisors (see below), whose sum is σ = 175257600. Its totient is φ = 19206720.

The previous prime is 68115211. The next prime is 68115241. The reversal of 68115222 is 22251186.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28722 + ... + 31002.

It is an arithmetic number, because the mean of its divisors is an integer number (2738400).

Almost surely, 2^68115222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68115222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87628800).

68115222 is an abundant number, since it is smaller than the sum of its proper divisors (107142378).

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

68115222 is a wasteful number, since it uses less digits than its factorization.

68115222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2378 (or 2372 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 68115222 is about 8253.1946541930. The cubic root of 68115222 is about 408.3959175859.

The spelling of 68115222 in words is "sixty-eight million, one hundred fifteen thousand, two hundred twenty-two".