2215983 has 32 divisors (see below), whose sum is σ = 3773952. Its totient is φ = 1123200.

The previous prime is 2215979. The next prime is 2215987. The reversal of 2215983 is 3895122.

2215983 = T₅₇ + T₅₈ + ... + T₂₃₇.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2215979) and next prime (2215987).

It is not a de Polignac number, because 2215983 - 2² = 2215979 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a D-number.

2215983 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2215983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12153 + ... + 12333.

It is an arithmetic number, because the mean of its divisors is an integer number (117936).

2^2215983 is an apocalyptic number.

2215983 is a deficient number, since it is larger than the sum of its proper divisors (1557969).

2215983 is a wasteful number, since it uses less digits than its factorization.

2215983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255.

The product of its digits is 4320, while the sum is 30.

The square root of 2215983 is about 1488.6178152904. The cubic root of 2215983 is about 130.3733449163.

The spelling of 2215983 in words is "two million, two hundred fifteen thousand, nine hundred eighty-three".