2667647 has 2 divisors, whose sum is σ = 2667648. Its totient is φ = 2667646.

The previous prime is 2667641. The next prime is 2667659. The reversal of 2667647 is 7467662.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2667647 - 2⁴ = 2667631 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2667647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2667641) 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, 1333823 + 1333824.

It is an arithmetic number, because the mean of its divisors is an integer number (1333824).

2^2667647 is an apocalyptic number.

2667647 is a deficient number, since it is larger than the sum of its proper divisors (1).

2667647 is an equidigital number, since it uses as much as digits as its factorization.

2667647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 38.

The square root of 2667647 is about 1633.2932988291. The cubic root of 2667647 is about 138.6892459174.

The spelling of 2667647 in words is "two million, six hundred sixty-seven thousand, six hundred forty-seven".