2215964087 has 4 divisors (see below), whose sum is σ = 2216607816. Its totient is φ = 2215320360.

The previous prime is 2215964083. The next prime is 2215964089. The reversal of 2215964087 is 7804695122.

It is a happy number.

2215964087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2215964087 - 2² = 2215964083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215964083) 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, 316673 + ... + 323594.

It is an arithmetic number, because the mean of its divisors is an integer number (554151954).

Almost surely, 2^2215964087 is an apocalyptic number.

2215964087 is a deficient number, since it is larger than the sum of its proper divisors (643729).

2215964087 is an equidigital number, since it uses as much as digits as its factorization.

2215964087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643728.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 2215964087 is about 47074.0277329230. The cubic root of 2215964087 is about 1303.7297401118.

The spelling of 2215964087 in words is "two billion, two hundred fifteen million, nine hundred sixty-four thousand, eighty-seven".