7003663 has 4 divisors (see below), whose sum is σ = 7009848. Its totient is φ = 6997480.

The previous prime is 7003657. The next prime is 7003679. The reversal of 7003663 is 3663007.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3663007 = 17 ⋅215471.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7003663 is a prime.

It is a Duffinian number.

7003663 is a modest number, since divided by 3663 gives 7 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7003603) 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, 853 + ... + 3838.

It is an arithmetic number, because the mean of its divisors is an integer number (1752462).

Almost surely, 2^7003663 is an apocalyptic number.

7003663 is a deficient number, since it is larger than the sum of its proper divisors (6185).

7003663 is a wasteful number, since it uses less digits than its factorization.

7003663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6184.

The product of its (nonzero) digits is 2268, while the sum is 25.

The square root of 7003663 is about 2646.4434624605. The cubic root of 7003663 is about 191.3264794441.

The spelling of 7003663 in words is "seven million, three thousand, six hundred sixty-three".