2215689 has 8 divisors (see below), whose sum is σ = 3376320. Its totient is φ = 1266096.

The previous prime is 2215673. The next prime is 2215691. The reversal of 2215689 is 9865122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2215689 - 2⁴ = 2215673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2215639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52734 + ... + 52775.

It is an arithmetic number, because the mean of its divisors is an integer number (422040).

2^2215689 is an apocalyptic number.

It is an amenable number.

2215689 is a deficient number, since it is larger than the sum of its proper divisors (1160631).

2215689 is a wasteful number, since it uses less digits than its factorization.

2215689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105519.

The product of its digits is 8640, while the sum is 33.

The square root of 2215689 is about 1488.5190626928. The cubic root of 2215689 is about 130.3675790088.

The spelling of 2215689 in words is "two million, two hundred fifteen thousand, six hundred eighty-nine".