1013663 has 12 divisors (see below), whose sum is σ = 1195632. Its totient is φ = 856800.

The previous prime is 1013641. The next prime is 1013671. The reversal of 1013663 is 3663101.

It is not a de Polignac number, because 1013663 - 2¹⁴ = 997279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6638 + ... + 6788.

It is an arithmetic number, because the mean of its divisors is an integer number (99636).

2^1013663 is an apocalyptic number.

1013663 is a deficient number, since it is larger than the sum of its proper divisors (181969).

1013663 is a wasteful number, since it uses less digits than its factorization.

1013663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 1013663 is about 1006.8083233665. The cubic root of 1013663 is about 100.4533747404.

Adding to 1013663 its reverse (3663101), we get a palindrome (4676764).

It can be divided in two parts, 101 and 3663, that multiplied together give a palindrome (369963).

The spelling of 1013663 in words is "one million, thirteen thousand, six hundred sixty-three".