6646231 has 2 divisors, whose sum is σ = 6646232. Its totient is φ = 6646230.

The previous prime is 6646217. The next prime is 6646247. The reversal of 6646231 is 1326466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6646231 - 2¹⁹ = 6121943 is a prime.

It is a super-2 number, since 2×6646231² = 88344773010722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6646231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6646271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3323115 + 3323116.

It is an arithmetic number, because the mean of its divisors is an integer number (3323116).

Almost surely, 2^6646231 is an apocalyptic number.

6646231 is a deficient number, since it is larger than the sum of its proper divisors (1).

6646231 is an equidigital number, since it uses as much as digits as its factorization.

6646231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 28.

The square root of 6646231 is about 2578.0285103156. The cubic root of 6646231 is about 188.0147019587.

The spelling of 6646231 in words is "six million, six hundred forty-six thousand, two hundred thirty-one".