68194566 has 24 divisors (see below), whose sum is σ = 161187624. Its totient is φ = 20664960.

The previous prime is 68194561. The next prime is 68194579. The reversal of 68194566 is 66549186.

68194566 is a `hidden beast` number, since 6 + 81 + 9 + 4 + 566 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68194561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172011 + ... + 172406.

It is an arithmetic number, because the mean of its divisors is an integer number (6716151).

Almost surely, 2^68194566 is an apocalyptic number.

68194566 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

68194566 is an abundant number, since it is smaller than the sum of its proper divisors (92993058).

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

68194566 is a wasteful number, since it uses less digits than its factorization.

68194566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344436 (or 344433 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 68194566 is about 8258.0001210947. Note that the first 3 decimals coincide. The cubic root of 68194566 is about 408.5544293499.

The spelling of 68194566 in words is "sixty-eight million, one hundred ninety-four thousand, five hundred sixty-six".