11647667 has 2 divisors, whose sum is σ = 11647668. Its totient is φ = 11647666.

The previous prime is 11647633. The next prime is 11647679. The reversal of 11647667 is 76674611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11647667 - 2¹² = 11643571 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11647667.

It is not a weakly prime, because it can be changed into another prime (11647607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5823833 + 5823834.

It is an arithmetic number, because the mean of its divisors is an integer number (5823834).

Almost surely, 2^11647667 is an apocalyptic number.

11647667 is a deficient number, since it is larger than the sum of its proper divisors (1).

11647667 is an equidigital number, since it uses as much as digits as its factorization.

11647667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 38.

The square root of 11647667 is about 3412.8678556311. The cubic root of 11647667 is about 226.6798841293.

The spelling of 11647667 in words is "eleven million, six hundred forty-seven thousand, six hundred sixty-seven".