2664385 has 12 divisors (see below), whose sum is σ = 3287484. Its totient is φ = 2072960.

The previous prime is 2664379. The next prime is 2664397. The reversal of 2664385 is 5834662.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1656369 + 1008016 = 1287^2 + 1004^2 .

It is not a de Polignac number, because 2664385 - 2⁵ = 2664353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2664385.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8247 + ... + 8563.

It is an arithmetic number, because the mean of its divisors is an integer number (273957).

2^2664385 is an apocalyptic number.

It is an amenable number.

2664385 is a deficient number, since it is larger than the sum of its proper divisors (623099).

2664385 is an equidigital number, since it uses as much as digits as its factorization.

2664385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 363 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 2664385 is about 1632.2943974663. The cubic root of 2664385 is about 138.6326931019.

The spelling of 2664385 in words is "two million, six hundred sixty-four thousand, three hundred eighty-five".