72663305 has 16 divisors (see below), whose sum is σ = 102441024. Its totient is φ = 48780480.

The previous prime is 72663289. The next prime is 72663319. The reversal of 72663305 is 50336627.

It is not a de Polignac number, because 72663305 - 2⁴ = 72663289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50099 + ... + 51528.

It is an arithmetic number, because the mean of its divisors is an integer number (6402564).

Almost surely, 2^72663305 is an apocalyptic number.

It is an amenable number.

72663305 is a deficient number, since it is larger than the sum of its proper divisors (29777719).

72663305 is a wasteful number, since it uses less digits than its factorization.

72663305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101656.

The product of its (nonzero) digits is 22680, while the sum is 32.

The square root of 72663305 is about 8524.2773887292. The cubic root of 72663305 is about 417.2903892403.

The spelling of 72663305 in words is "seventy-two million, six hundred sixty-three thousand, three hundred five".