68862221 has 4 divisors (see below), whose sum is σ = 70463712. Its totient is φ = 67260732.

The previous prime is 68862197. The next prime is 68862239. The reversal of 68862221 is 12226886.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68862221 - 2¹⁰ = 68861197 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 (68862281) 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, 800681 + ... + 800766.

It is an arithmetic number, because the mean of its divisors is an integer number (17615928).

Almost surely, 2^68862221 is an apocalyptic number.

It is an amenable number.

68862221 is a deficient number, since it is larger than the sum of its proper divisors (1601491).

68862221 is a wasteful number, since it uses less digits than its factorization.

68862221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601490.

The product of its digits is 18432, while the sum is 35.

The square root of 68862221 is about 8298.3263975334. The cubic root of 68862221 is about 409.8834112280.

The spelling of 68862221 in words is "sixty-eight million, eight hundred sixty-two thousand, two hundred twenty-one".