36663903 has 24 divisors (see below), whose sum is σ = 54171936. Its totient is φ = 23889600.

The previous prime is 36663899. The next prime is 36663919. The reversal of 36663903 is 30936663.

It is not a de Polignac number, because 36663903 - 2² = 36663899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36663923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115501 + ... + 115817.

It is an arithmetic number, because the mean of its divisors is an integer number (2257164).

Almost surely, 2^36663903 is an apocalyptic number.

36663903 is a deficient number, since it is larger than the sum of its proper divisors (17508033).

36663903 is a wasteful number, since it uses less digits than its factorization.

36663903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575 (or 572 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 36.

The square root of 36663903 is about 6055.0725016303. The cubic root of 36663903 is about 332.2101508564.

It can be divided in two parts, 3666 and 3903, that added together give a square (7569 = 87²).

The spelling of 36663903 in words is "thirty-six million, six hundred sixty-three thousand, nine hundred three".