72766747 has 2 divisors, whose sum is σ = 72766748. Its totient is φ = 72766746.

The previous prime is 72766711. The next prime is 72766769. The reversal of 72766747 is 74766727.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72766747 - 2¹⁹ = 72242459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72766697 and 72766706.

It is not a weakly prime, because it can be changed into another prime (72706747) 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, 36383373 + 36383374.

It is an arithmetic number, because the mean of its divisors is an integer number (36383374).

Almost surely, 2^72766747 is an apocalyptic number.

72766747 is a deficient number, since it is larger than the sum of its proper divisors (1).

72766747 is an equidigital number, since it uses as much as digits as its factorization.

72766747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 691488, while the sum is 46.

The square root of 72766747 is about 8530.3427246506. The cubic root of 72766747 is about 417.4883107153.

The spelling of 72766747 in words is "seventy-two million, seven hundred sixty-six thousand, seven hundred forty-seven".