2216667 has 4 divisors (see below), whose sum is σ = 2955560. Its totient is φ = 1477776.

The previous prime is 2216659. The next prime is 2216699. The reversal of 2216667 is 7666122.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2216667 - 2³ = 2216659 is a prime.

It is a super-2 number, since 2×2216667² = 9827225177778, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2216657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369442 + ... + 369447.

It is an arithmetic number, because the mean of its divisors is an integer number (738890).

2^2216667 is an apocalyptic number.

2216667 is a deficient number, since it is larger than the sum of its proper divisors (738893).

2216667 is an equidigital number, since it uses as much as digits as its factorization.

2216667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738892.

The product of its digits is 6048, while the sum is 30.

The square root of 2216667 is about 1488.8475408852. The cubic root of 2216667 is about 130.3867575033.

It can be divided in two parts, 2 and 216667, that multiplied together give a palindrome (433334).

The spelling of 2216667 in words is "two million, two hundred sixteen thousand, six hundred sixty-seven".