2664565 has 8 divisors (see below), whose sum is σ = 3207168. Its totient is φ = 2125200.

The previous prime is 2664553. The next prime is 2664577. The reversal of 2664565 is 5654662.

It is an interprime number because it is at equal distance from previous prime (2664553) and next prime (2664577).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2664565 - 2⁵ = 2664533 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 2664565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1740 + ... + 2890.

It is an arithmetic number, because the mean of its divisors is an integer number (400896).

2^2664565 is an apocalyptic number.

It is an amenable number.

2664565 is a deficient number, since it is larger than the sum of its proper divisors (542603).

2664565 is a wasteful number, since it uses less digits than its factorization.

2664565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619.

The product of its digits is 43200, while the sum is 34.

The square root of 2664565 is about 1632.3495336477. The cubic root of 2664565 is about 138.6358149384.

The spelling of 2664565 in words is "two million, six hundred sixty-four thousand, five hundred sixty-five".