7216667 has 2 divisors, whose sum is σ = 7216668. Its totient is φ = 7216666.

The previous prime is 7216663. The next prime is 7216673. The reversal of 7216667 is 7666127.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7216667 - 2² = 7216663 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7216661) 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, 3608333 + 3608334.

It is an arithmetic number, because the mean of its divisors is an integer number (3608334).

Almost surely, 2^7216667 is an apocalyptic number.

7216667 is a deficient number, since it is larger than the sum of its proper divisors (1).

7216667 is an equidigital number, since it uses as much as digits as its factorization.

7216667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 35.

The square root of 7216667 is about 2686.3854898357. The cubic root of 7216667 is about 193.2467603540.

The spelling of 7216667 in words is "seven million, two hundred sixteen thousand, six hundred sixty-seven".