68215722 has 8 divisors (see below), whose sum is σ = 136431456. Its totient is φ = 22738572.

The previous prime is 68215711. The next prime is 68215729. The reversal of 68215722 is 22751286.

It is a sphenic number, since it is the product of 3 distinct primes.

68215722 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (68215729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5684638 + ... + 5684649.

It is an arithmetic number, because the mean of its divisors is an integer number (17053932).

Almost surely, 2^68215722 is an apocalyptic number.

68215722 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

68215722 is a wasteful number, since it uses less digits than its factorization.

68215722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11369292.

The product of its digits is 13440, while the sum is 33.

The square root of 68215722 is about 8259.2809614397. The cubic root of 68215722 is about 408.5966735948.

The spelling of 68215722 in words is "sixty-eight million, two hundred fifteen thousand, seven hundred twenty-two".