6664831 has 2 divisors, whose sum is σ = 6664832. Its totient is φ = 6664830.

The previous prime is 6664811. The next prime is 6664843. The reversal of 6664831 is 1384666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6664831 - 2¹⁵ = 6632063 is a prime.

It is a super-2 number, since 2×6664831² = 88839944517122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6664811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3332415 + 3332416.

It is an arithmetic number, because the mean of its divisors is an integer number (3332416).

Almost surely, 2^6664831 is an apocalyptic number.

6664831 is a deficient number, since it is larger than the sum of its proper divisors (1).

6664831 is an equidigital number, since it uses as much as digits as its factorization.

6664831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 6664831 is about 2581.6333976767. The cubic root of 6664831 is about 188.1899299058.

The spelling of 6664831 in words is "six million, six hundred sixty-four thousand, eight hundred thirty-one".