72663273 has 12 divisors (see below), whose sum is σ = 105094080. Its totient is φ = 48379416.

The previous prime is 72663271. The next prime is 72663289. The reversal of 72663273 is 37236627.

It is not a de Polignac number, because 72663273 - 2¹ = 72663271 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72663271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2740 + ... + 12362.

It is an arithmetic number, because the mean of its divisors is an integer number (8757840).

Almost surely, 2^72663273 is an apocalyptic number.

It is an amenable number.

72663273 is a deficient number, since it is larger than the sum of its proper divisors (32430807).

72663273 is a wasteful number, since it uses less digits than its factorization.

72663273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10468 (or 10465 counting only the distinct ones).

The product of its digits is 63504, while the sum is 36.

The square root of 72663273 is about 8524.2755117371. The cubic root of 72663273 is about 417.2903279838.

The spelling of 72663273 in words is "seventy-two million, six hundred sixty-three thousand, two hundred seventy-three".