68412220 has 24 divisors (see below), whose sum is σ = 144396000. Its totient is φ = 27225792.

The previous prime is 68412193. The next prime is 68412229. The reversal of 68412220 is 2221486.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68412229) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4615 + ... + 12574.

It is an arithmetic number, because the mean of its divisors is an integer number (6016500).

Almost surely, 2^68412220 is an apocalyptic number.

It is an amenable number.

68412220 is an abundant number, since it is smaller than the sum of its proper divisors (75983780).

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

68412220 is a wasteful number, since it uses less digits than its factorization.

68412220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17397 (or 17395 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 68412220 is about 8271.1679949086. The cubic root of 68412220 is about 408.9886236158.

The spelling of 68412220 in words is "sixty-eight million, four hundred twelve thousand, two hundred twenty".