73663903 has 2 divisors, whose sum is σ = 73663904. Its totient is φ = 73663902.

The previous prime is 73663879. The next prime is 73663913. The reversal of 73663903 is 30936637.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73663903 - 2⁹ = 73663391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73663913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36831951 + 36831952.

It is an arithmetic number, because the mean of its divisors is an integer number (36831952).

Almost surely, 2^73663903 is an apocalyptic number.

73663903 is a deficient number, since it is larger than the sum of its proper divisors (1).

73663903 is an equidigital number, since it uses as much as digits as its factorization.

73663903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 37.

The square root of 73663903 is about 8582.7677936666. The cubic root of 73663903 is about 419.1970733308.

The spelling of 73663903 in words is "seventy-three million, six hundred sixty-three thousand, nine hundred three".