1003660563 has 8 divisors (see below), whose sum is σ = 1338707088. Its totient is φ = 668860544.

The previous prime is 1003660519. The next prime is 1003660571. The reversal of 1003660563 is 3650663001.

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 1003660563 - 2⁹ = 1003660051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1003660563.

It is not an unprimeable number, because it can be changed into a prime (1003660583) 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, 51906 + ... + 68567.

It is an arithmetic number, because the mean of its divisors is an integer number (167338386).

Almost surely, 2^1003660563 is an apocalyptic number.

1003660563 is a deficient number, since it is larger than the sum of its proper divisors (335046525).

1003660563 is a wasteful number, since it uses less digits than its factorization.

1003660563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123253.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 1003660563 is about 31680.6023143500. The cubic root of 1003660563 is about 1001.2187018292.

It can be divided in two parts, 100 and 3660563, that added together give a palindrome (3660663).

The spelling of 1003660563 in words is "one billion, three million, six hundred sixty thousand, five hundred sixty-three".