2216387 has 2 divisors, whose sum is σ = 2216388. Its totient is φ = 2216386.

The previous prime is 2216377. The next prime is 2216399. The reversal of 2216387 is 7836122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2216387 - 2⁶ = 2216323 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 2²¹ + 1 + 6³ + 3⁶ + 8³ + 7⁶ .

It is not a weakly prime, because it can be changed into another prime (2216317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108193 + 1108194.

It is an arithmetic number, because the mean of its divisors is an integer number (1108194).

2^2216387 is an apocalyptic number.

2216387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216387 is an equidigital number, since it uses as much as digits as its factorization.

2216387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 29.

The square root of 2216387 is about 1488.7535054535. The cubic root of 2216387 is about 130.3812673042.

The spelling of 2216387 in words is "two million, two hundred sixteen thousand, three hundred eighty-seven".