68772226 has 4 divisors (see below), whose sum is σ = 103158342. Its totient is φ = 34386112.

The previous prime is 68772181. The next prime is 68772227. The reversal of 68772226 is 62227786.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 52780225 + 15992001 = 7265^2 + 3999^2 .

It is not an unprimeable number, because it can be changed into a prime (68772227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17193055 + ... + 17193058.

Almost surely, 2^68772226 is an apocalyptic number.

68772226 is a deficient number, since it is larger than the sum of its proper divisors (34386116).

68772226 is a wasteful number, since it uses less digits than its factorization.

68772226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34386115.

The product of its digits is 112896, while the sum is 40.

The square root of 68772226 is about 8292.9021458112. The cubic root of 68772226 is about 409.7047765671.

The spelling of 68772226 in words is "sixty-eight million, seven hundred seventy-two thousand, two hundred twenty-six".