2218775 has 12 divisors (see below), whose sum is σ = 2963352. Its totient is φ = 1638240.

The previous prime is 2218771. The next prime is 2218807. The reversal of 2218775 is 5778122.

It is not a de Polignac number, because 2218775 - 2² = 2218771 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3089 + ... + 3738.

It is an arithmetic number, because the mean of its divisors is an integer number (246946).

2^2218775 is an apocalyptic number.

2218775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2218775 is a deficient number, since it is larger than the sum of its proper divisors (744577).

2218775 is a wasteful number, since it uses less digits than its factorization.

2218775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6850 (or 6845 counting only the distinct ones).

The product of its digits is 7840, while the sum is 32.

The square root of 2218775 is about 1489.5553027666. Note that the first 3 decimals coincide. The cubic root of 2218775 is about 130.4280760239.

The spelling of 2218775 in words is "two million, two hundred eighteen thousand, seven hundred seventy-five".