2503663 has 2 divisors, whose sum is σ = 2503664. Its totient is φ = 2503662.

The previous prime is 2503651. The next prime is 2503703. The reversal of 2503663 is 3663052.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2503663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2503463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1251831 + 1251832.

It is an arithmetic number, because the mean of its divisors is an integer number (1251832).

2^2503663 is an apocalyptic number.

2503663 is a deficient number, since it is larger than the sum of its proper divisors (1).

2503663 is an equidigital number, since it uses as much as digits as its factorization.

2503663 is an evil number, because the sum of its binary digits is even.

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

The square root of 2503663 is about 1582.2967484009. The cubic root of 2503663 is about 135.7871345601.

The spelling of 2503663 in words is "two million, five hundred three thousand, six hundred sixty-three".