68664822 has 64 divisors (see below), whose sum is σ = 151173120. Its totient is φ = 20715264.

The previous prime is 68664793. The next prime is 68664823. The reversal of 68664822 is 22846686.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68664823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307803 + ... + 308025.

It is an arithmetic number, because the mean of its divisors is an integer number (2362080).

Almost surely, 2^68664822 is an apocalyptic number.

68664822 is an abundant number, since it is smaller than the sum of its proper divisors (82508298).

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

68664822 is a wasteful number, since it uses less digits than its factorization.

68664822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357.

The product of its digits is 221184, while the sum is 42.

The square root of 68664822 is about 8286.4239572930. The cubic root of 68664822 is about 409.4913819950.

The spelling of 68664822 in words is "sixty-eight million, six hundred sixty-four thousand, eight hundred twenty-two".