2215690 has 16 divisors (see below), whose sum is σ = 4048992. Its totient is φ = 872784.

The previous prime is 2215673. The next prime is 2215691. The reversal of 2215690 is 965122.

It is a super-2 number, since 2×2215690² = 9818564352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2215691) 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, 984 + ... + 2323.

It is an arithmetic number, because the mean of its divisors is an integer number (253062).

2^2215690 is an apocalyptic number.

2215690 is a deficient number, since it is larger than the sum of its proper divisors (1833302).

2215690 is a wasteful number, since it uses less digits than its factorization.

2215690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 2215690 is about 1488.5193985971. The cubic root of 2215690 is about 130.3675986216.

The spelling of 2215690 in words is "two million, two hundred fifteen thousand, six hundred ninety".