68226421 has 8 divisors (see below), whose sum is σ = 69431040. Its totient is φ = 67031712.

The previous prime is 68226407. The next prime is 68226461. The reversal of 68226421 is 12462286.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68226421 - 2⁷ = 68226293 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 (68226461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12156 + ... + 16858.

It is an arithmetic number, because the mean of its divisors is an integer number (8678880).

Almost surely, 2^68226421 is an apocalyptic number.

It is an amenable number.

68226421 is a deficient number, since it is larger than the sum of its proper divisors (1204619).

68226421 is a wasteful number, since it uses less digits than its factorization.

68226421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4955.

The product of its digits is 9216, while the sum is 31.

The square root of 68226421 is about 8259.9286316529. The cubic root of 68226421 is about 408.6180340044.

The spelling of 68226421 in words is "sixty-eight million, two hundred twenty-six thousand, four hundred twenty-one".