2116615 has 4 divisors (see below), whose sum is σ = 2539944. Its totient is φ = 1693288.

The previous prime is 2116607. The next prime is 2116627. The reversal of 2116615 is 5166112.

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

It is a cyclic number.

It is not a de Polignac number, because 2116615 - 2³ = 2116607 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211657 + ... + 211666.

It is an arithmetic number, because the mean of its divisors is an integer number (634986).

2^2116615 is an apocalyptic number.

2116615 is a deficient number, since it is larger than the sum of its proper divisors (423329).

2116615 is an equidigital number, since it uses as much as digits as its factorization.

2116615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423328.

The product of its digits is 360, while the sum is 22.

The square root of 2116615 is about 1454.8590997069. The cubic root of 2116615 is about 128.3947570508.

The spelling of 2116615 in words is "two million, one hundred sixteen thousand, six hundred fifteen".