2664523 has 4 divisors (see below), whose sum is σ = 2704360. Its totient is φ = 2624688.

The previous prime is 2664521. The next prime is 2664533. The reversal of 2664523 is 3254662.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2664523 - 2¹ = 2664521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2664491 and 2664500.

It is not an unprimeable number, because it can be changed into a prime (2664521) 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, 19818 + ... + 19951.

It is an arithmetic number, because the mean of its divisors is an integer number (676090).

2^2664523 is an apocalyptic number.

2664523 is a deficient number, since it is larger than the sum of its proper divisors (39837).

2664523 is an equidigital number, since it uses as much as digits as its factorization.

2664523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39836.

The product of its digits is 8640, while the sum is 28.

The square root of 2664523 is about 1632.3366687053. The cubic root of 2664523 is about 138.6350865225.

The spelling of 2664523 in words is "two million, six hundred sixty-four thousand, five hundred twenty-three".