6662567 has 2 divisors, whose sum is σ = 6662568. Its totient is φ = 6662566.

The previous prime is 6662563. The next prime is 6662581. The reversal of 6662567 is 7652666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6662567 - 2² = 6662563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6662567.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6662561) 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, 3331283 + 3331284.

It is an arithmetic number, because the mean of its divisors is an integer number (3331284).

Almost surely, 2^6662567 is an apocalyptic number.

6662567 is a deficient number, since it is larger than the sum of its proper divisors (1).

6662567 is an equidigital number, since it uses as much as digits as its factorization.

6662567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 38.

The square root of 6662567 is about 2581.1948783461. The cubic root of 6662567 is about 188.1686185250.

Subtracting 6662567 from its reverse (7652666), we obtain a palindrome (990099).

The spelling of 6662567 in words is "six million, six hundred sixty-two thousand, five hundred sixty-seven".