68222647 has 4 divisors (see below), whose sum is σ = 69886656. Its totient is φ = 66558640.

The previous prime is 68222611. The next prime is 68222657. The reversal of 68222647 is 74622286.

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 68222647 - 2⁷ = 68222519 is a prime.

It is a super-3 number, since 3×68222647³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68222657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 831943 + ... + 832024.

It is an arithmetic number, because the mean of its divisors is an integer number (17471664).

Almost surely, 2^68222647 is an apocalyptic number.

68222647 is a deficient number, since it is larger than the sum of its proper divisors (1664009).

68222647 is a wasteful number, since it uses less digits than its factorization.

68222647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664008.

The product of its digits is 64512, while the sum is 37.

The square root of 68222647 is about 8259.7001761565. The cubic root of 68222647 is about 408.6104995191.

The spelling of 68222647 in words is "sixty-eight million, two hundred twenty-two thousand, six hundred forty-seven".