6331669 has 2 divisors, whose sum is σ = 6331670. Its totient is φ = 6331668.

The previous prime is 6331609. The next prime is 6331679. The reversal of 6331669 is 9661336.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6275025 + 56644 = 2505^2 + 238^2 .

It is a cyclic number.

It is not a de Polignac number, because 6331669 - 2¹³ = 6323477 is a prime.

It is a super-2 number, since 2×6331669² = 80180064651122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6331609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3165834 + 3165835.

It is an arithmetic number, because the mean of its divisors is an integer number (3165835).

Almost surely, 2^6331669 is an apocalyptic number.

It is an amenable number.

6331669 is a deficient number, since it is larger than the sum of its proper divisors (1).

6331669 is an equidigital number, since it uses as much as digits as its factorization.

6331669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 34.

The square root of 6331669 is about 2516.2807871937. The cubic root of 6331669 is about 185.0004285357. Note that the first 3 decimals are identical.

The spelling of 6331669 in words is "six million, three hundred thirty-one thousand, six hundred sixty-nine".