2645003 has 8 divisors (see below), whose sum is σ = 2755200. Its totient is φ = 2536128.

The previous prime is 2644981. The next prime is 2645011. The reversal of 2645003 is 3005462.

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

It is a cyclic number.

It is not a de Polignac number, because 2645003 - 2¹² = 2640907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2645063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6263 + ... + 6671.

It is an arithmetic number, because the mean of its divisors is an integer number (344400).

2^2645003 is an apocalyptic number.

2645003 is a deficient number, since it is larger than the sum of its proper divisors (110197).

2645003 is a wasteful number, since it uses less digits than its factorization.

2645003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 2645003 is about 1626.3465190420. The cubic root of 2645003 is about 138.2957146785.

The spelling of 2645003 in words is "two million, six hundred forty-five thousand, three".