2215867 has 2 divisors, whose sum is σ = 2215868. Its totient is φ = 2215866.

The previous prime is 2215853. The next prime is 2215901. The reversal of 2215867 is 7685122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2215867 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹⁷ + 2¹⁷ + 1 + 5⁹ + 8³ + 6² + 7² .

It is not a weakly prime, because it can be changed into another prime (2215847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107933 + 1107934.

It is an arithmetic number, because the mean of its divisors is an integer number (1107934).

2^2215867 is an apocalyptic number.

2215867 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215867 is an equidigital number, since it uses as much as digits as its factorization.

2215867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 31.

The square root of 2215867 is about 1488.5788524630. The cubic root of 2215867 is about 130.3710699933.

The spelling of 2215867 in words is "two million, two hundred fifteen thousand, eight hundred sixty-seven".