13003623 has 12 divisors (see below), whose sum is σ = 19888128. Its totient is φ = 8159040.

The previous prime is 13003621. The next prime is 13003643. The reversal of 13003623 is 32630031.

It is a happy number.

13003623 is a `hidden beast` number, since 1 + 300 + 362 + 3 = 666.

It is not a de Polignac number, because 13003623 - 2¹ = 13003621 is a prime.

It is a super-2 number, since 2×13003623² = 338188422252258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13003596 and 13003605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13003621) 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, 42343 + ... + 42648.

It is an arithmetic number, because the mean of its divisors is an integer number (1657344).

Almost surely, 2^13003623 is an apocalyptic number.

13003623 is a deficient number, since it is larger than the sum of its proper divisors (6884505).

13003623 is a wasteful number, since it uses less digits than its factorization.

13003623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85014 (or 85011 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 13003623 is about 3606.0536601665. The cubic root of 13003623 is about 235.1553100395.

Adding to 13003623 its reverse (32630031), we get a palindrome (45633654).

The spelling of 13003623 in words is "thirteen million, three thousand, six hundred twenty-three".