6662281 has 2 divisors, whose sum is σ = 6662282. Its totient is φ = 6662280.

The previous prime is 6662233. The next prime is 6662287. The reversal of 6662281 is 1822666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6451600 + 210681 = 2540^2 + 459^2 .

It is a cyclic number.

It is not a de Polignac number, because 6662281 - 2¹¹ = 6660233 is a prime.

It is a super-2 number, since 2×6662281² = 88771976245922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6662287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3331140 + 3331141.

It is an arithmetic number, because the mean of its divisors is an integer number (3331141).

Almost surely, 2^6662281 is an apocalyptic number.

It is an amenable number.

6662281 is a deficient number, since it is larger than the sum of its proper divisors (1).

6662281 is an equidigital number, since it uses as much as digits as its factorization.

6662281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 6662281 is about 2581.1394770527. The cubic root of 6662281 is about 188.1659260195.

The spelling of 6662281 in words is "six million, six hundred sixty-two thousand, two hundred eighty-one".