2205664 has 12 divisors (see below), whose sum is σ = 4342464. Its totient is φ = 1102816.

The previous prime is 2205661. The next prime is 2205667. The reversal of 2205664 is 4665022.

It is an interprime number because it is at equal distance from previous prime (2205661) and next prime (2205667).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34432 + ... + 34495.

It is an arithmetic number, because the mean of its divisors is an integer number (361872).

2^2205664 is an apocalyptic number.

It is an amenable number.

2205664 is a deficient number, since it is larger than the sum of its proper divisors (2136800).

2205664 is an equidigital number, since it uses as much as digits as its factorization.

2205664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68937 (or 68929 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2205664 is about 1485.1478040922. The cubic root of 2205664 is about 130.1706634297.

The spelling of 2205664 in words is "two million, two hundred five thousand, six hundred sixty-four".