2216764 has 24 divisors (see below), whose sum is σ = 4290048. Its totient is φ = 993840.

The previous prime is 2216761. The next prime is 2216777. The reversal of 2216764 is 4676122.

2216764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3349 + ... + 3955.

It is an arithmetic number, because the mean of its divisors is an integer number (178752).

2^2216764 is an apocalyptic number.

It is an amenable number.

2216764 is a deficient number, since it is larger than the sum of its proper divisors (2073284).

2216764 is a wasteful number, since it uses less digits than its factorization.

2216764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 703 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 2216764 is about 1488.8801160604. The cubic root of 2216764 is about 130.3886593573.

The spelling of 2216764 in words is "two million, two hundred sixteen thousand, seven hundred sixty-four".