72780683 has 2 divisors, whose sum is σ = 72780684. Its totient is φ = 72780682.

The previous prime is 72780679. The next prime is 72780707. The reversal of 72780683 is 38608727.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72780683 - 2² = 72780679 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72780683.

It is not a weakly prime, because it can be changed into another prime (72780283) 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, 36390341 + 36390342.

It is an arithmetic number, because the mean of its divisors is an integer number (36390342).

Almost surely, 2^72780683 is an apocalyptic number.

72780683 is a deficient number, since it is larger than the sum of its proper divisors (1).

72780683 is an equidigital number, since it uses as much as digits as its factorization.

72780683 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 72780683 is about 8531.1595343189. The cubic root of 72780683 is about 417.5149609182.

The spelling of 72780683 in words is "seventy-two million, seven hundred eighty thousand, six hundred eighty-three".