72666383 has 2 divisors, whose sum is σ = 72666384. Its totient is φ = 72666382.

The previous prime is 72666359. The next prime is 72666389. The reversal of 72666383 is 38366627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72666383 - 2¹⁴ = 72649999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72666383.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72666389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36333191 + 36333192.

It is an arithmetic number, because the mean of its divisors is an integer number (36333192).

Almost surely, 2^72666383 is an apocalyptic number.

72666383 is a deficient number, since it is larger than the sum of its proper divisors (1).

72666383 is an equidigital number, since it uses as much as digits as its factorization.

72666383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 41.

The square root of 72666383 is about 8524.4579299801. The cubic root of 72666383 is about 417.2962812637.

The spelling of 72666383 in words is "seventy-two million, six hundred sixty-six thousand, three hundred eighty-three".