72766039 has 2 divisors, whose sum is σ = 72766040. Its totient is φ = 72766038.

The previous prime is 72766009. The next prime is 72766063. The reversal of 72766039 is 93066727.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72766039 - 2⁷ = 72765911 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72765992 and 72766010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72766009) 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, 36383019 + 36383020.

It is an arithmetic number, because the mean of its divisors is an integer number (36383020).

Almost surely, 2^72766039 is an apocalyptic number.

72766039 is a deficient number, since it is larger than the sum of its proper divisors (1).

72766039 is an equidigital number, since it uses as much as digits as its factorization.

72766039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 40.

The square root of 72766039 is about 8530.3012256309. The cubic root of 72766039 is about 417.4869566963.

It can be divided in two parts, 727 and 66039, that added together give a palindrome (66766).

The spelling of 72766039 in words is "seventy-two million, seven hundred sixty-six thousand, thirty-nine".