73903 has 4 divisors (see below), whose sum is σ = 74448. Its totient is φ = 73360.

The previous prime is 73897. The next prime is 73907. The reversal of 73903 is 30937.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73903 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73907) 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, 123 + ... + 403.

It is an arithmetic number, because the mean of its divisors is an integer number (18612).

2⁷³⁹⁰³ is an apocalyptic number.

73903 is a deficient number, since it is larger than the sum of its proper divisors (545).

73903 is a wasteful number, since it uses less digits than its factorization.

73903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544.

The product of its (nonzero) digits is 567, while the sum is 22.

The square root of 73903 is about 271.8510621646. The cubic root of 73903 is about 41.9650124343.

The spelling of 73903 in words is "seventy-three thousand, nine hundred three".