68022247 has 4 divisors (see below), whose sum is σ = 70979760. Its totient is φ = 65064736.

The previous prime is 68022217. The next prime is 68022257. The reversal of 68022247 is 74222086.

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

It is a cyclic number.

It is not a de Polignac number, because 68022247 - 2¹⁹ = 67497959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68022217) 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 3 ways as a sum of consecutive naturals, for example, 1478722 + ... + 1478767.

It is an arithmetic number, because the mean of its divisors is an integer number (17744940).

Almost surely, 2^68022247 is an apocalyptic number.

68022247 is a deficient number, since it is larger than the sum of its proper divisors (2957513).

68022247 is a wasteful number, since it uses less digits than its factorization.

68022247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2957512.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 68022247 is about 8247.5600634369. The cubic root of 68022247 is about 408.2100173879.

The spelling of 68022247 in words is "sixty-eight million, twenty-two thousand, two hundred forty-seven".