6366989 has 2 divisors, whose sum is σ = 6366990. Its totient is φ = 6366988.

The previous prime is 6366977. The next prime is 6367001. The reversal of 6366989 is 9896636.

It is a balanced prime because it is at equal distance from previous prime (6366977) and next prime (6367001).

It can be written as a sum of positive squares in only one way, i.e., 6086089 + 280900 = 2467^2 + 530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6366989 is a prime.

It is a super-2 number, since 2×6366989² = 81077097852242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6366089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3183494 + 3183495.

It is an arithmetic number, because the mean of its divisors is an integer number (3183495).

Almost surely, 2^6366989 is an apocalyptic number.

It is an amenable number.

6366989 is a deficient number, since it is larger than the sum of its proper divisors (1).

6366989 is an equidigital number, since it uses as much as digits as its factorization.

6366989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 47.

The square root of 6366989 is about 2523.2893215008. The cubic root of 6366989 is about 185.3437873296.

The spelling of 6366989 in words is "six million, three hundred sixty-six thousand, nine hundred eighty-nine".