68250221 has 8 divisors (see below), whose sum is σ = 73887744. Its totient is φ = 62668080.

The previous prime is 68250191. The next prime is 68250293. The reversal of 68250221 is 12205286.

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 68250221 - 2¹⁸ = 67988077 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 (68259221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11261 + ... + 16226.

It is an arithmetic number, because the mean of its divisors is an integer number (9235968).

Almost surely, 2^68250221 is an apocalyptic number.

It is an amenable number.

68250221 is a deficient number, since it is larger than the sum of its proper divisors (5637523).

68250221 is a wasteful number, since it uses less digits than its factorization.

68250221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27691.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 68250221 is about 8261.3691964468. The cubic root of 68250221 is about 408.6655423765.

The spelling of 68250221 in words is "sixty-eight million, two hundred fifty thousand, two hundred twenty-one".