72786347 has 2 divisors, whose sum is σ = 72786348. Its totient is φ = 72786346.

The previous prime is 72786341. The next prime is 72786361. The reversal of 72786347 is 74368727.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72786347 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72786298 and 72786307.

It is not a weakly prime, because it can be changed into another prime (72786341) 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, 36393173 + 36393174.

It is an arithmetic number, because the mean of its divisors is an integer number (36393174).

Almost surely, 2^72786347 is an apocalyptic number.

72786347 is a deficient number, since it is larger than the sum of its proper divisors (1).

72786347 is an equidigital number, since it uses as much as digits as its factorization.

72786347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 395136, while the sum is 44.

The square root of 72786347 is about 8531.4914874247. The cubic root of 72786347 is about 417.5257913717.

The spelling of 72786347 in words is "seventy-two million, seven hundred eighty-six thousand, three hundred forty-seven".