2213787 has 4 divisors (see below), whose sum is σ = 2951720. Its totient is φ = 1475856.

The previous prime is 2213759. The next prime is 2213789. The reversal of 2213787 is 7873122.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2213787 - 2⁸ = 2213531 is a prime.

It is a super-3 number, since 3×2213787³ = 32548333193061703209, which contains 333 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2213789) 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, 368962 + ... + 368967.

It is an arithmetic number, because the mean of its divisors is an integer number (737930).

2^2213787 is an apocalyptic number.

2213787 is a deficient number, since it is larger than the sum of its proper divisors (737933).

2213787 is an equidigital number, since it uses as much as digits as its factorization.

2213787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737932.

The product of its digits is 4704, while the sum is 30.

The square root of 2213787 is about 1487.8800354867. The cubic root of 2213787 is about 130.3302647888.

The spelling of 2213787 in words is "two million, two hundred thirteen thousand, seven hundred eighty-seven".