2563603 has 8 divisors (see below), whose sum is σ = 3057408. Its totient is φ = 2101704.

The previous prime is 2563601. The next prime is 2563633. The reversal of 2563603 is 3063652.

2563603 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2563603 - 2¹ = 2563601 is a prime.

It is a Duffinian number.

2563603 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2563601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7801 + ... + 8122.

It is an arithmetic number, because the mean of its divisors is an integer number (382176).

2^2563603 is an apocalyptic number.

2563603 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2563603 is a deficient number, since it is larger than the sum of its proper divisors (493805).

2563603 is a wasteful number, since it uses less digits than its factorization.

2563603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15953.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 2563603 is about 1601.1255416113. The cubic root of 2563603 is about 136.8622231841.

The spelling of 2563603 in words is "two million, five hundred sixty-three thousand, six hundred three".