68209222 has 4 divisors (see below), whose sum is σ = 102313836. Its totient is φ = 34104610.

The previous prime is 68209181. The next prime is 68209261. The reversal of 68209222 is 22290286.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22290286 = 2 ⋅11145143.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17052304 + ... + 17052307.

It is an arithmetic number, because the mean of its divisors is an integer number (25578459).

Almost surely, 2^68209222 is an apocalyptic number.

68209222 is a deficient number, since it is larger than the sum of its proper divisors (34104614).

68209222 is a wasteful number, since it uses less digits than its factorization.

68209222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34104613.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 68209222 is about 8258.8874553417. The cubic root of 68209222 is about 408.5836953416.

The spelling of 68209222 in words is "sixty-eight million, two hundred nine thousand, two hundred twenty-two".