2207864 has 16 divisors (see below), whose sum is σ = 4252200. Its totient is φ = 1073952.

The previous prime is 2207861. The next prime is 2207873. The reversal of 2207864 is 4687022.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2207861) 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, 3434 + ... + 4025.

2^2207864 is an apocalyptic number.

It is an amenable number.

2207864 is a deficient number, since it is larger than the sum of its proper divisors (2044336).

2207864 is a wasteful number, since it uses less digits than its factorization.

2207864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7502 (or 7498 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 2207864 is about 1485.8882865142. Note that the first 3 decimals coincide. The cubic root of 2207864 is about 130.2139278464.

The spelling of 2207864 in words is "two million, two hundred seven thousand, eight hundred sixty-four".