11964647 has 2 divisors, whose sum is σ = 11964648. Its totient is φ = 11964646.

The previous prime is 11964613. The next prime is 11964679. The reversal of 11964647 is 74646911.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11964647 - 2¹² = 11960551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11964647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11964607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5982323 + 5982324.

It is an arithmetic number, because the mean of its divisors is an integer number (5982324).

Almost surely, 2^11964647 is an apocalyptic number.

11964647 is a deficient number, since it is larger than the sum of its proper divisors (1).

11964647 is an equidigital number, since it uses as much as digits as its factorization.

11964647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 11964647 is about 3458.9950852813. The cubic root of 11964647 is about 228.7177991243.

The spelling of 11964647 in words is "eleven million, nine hundred sixty-four thousand, six hundred forty-seven".