72447763 has 2 divisors, whose sum is σ = 72447764. Its totient is φ = 72447762.

The previous prime is 72447757. The next prime is 72447787. The reversal of 72447763 is 36774427.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72447763 is a prime.

It is not a weakly prime, because it can be changed into another prime (72444763) 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, 36223881 + 36223882.

It is an arithmetic number, because the mean of its divisors is an integer number (36223882).

Almost surely, 2^72447763 is an apocalyptic number.

72447763 is a deficient number, since it is larger than the sum of its proper divisors (1).

72447763 is an equidigital number, since it uses as much as digits as its factorization.

72447763 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 197568, while the sum is 40.

The square root of 72447763 is about 8511.6251679688. The cubic root of 72447763 is about 416.8773761634.

The spelling of 72447763 in words is "seventy-two million, four hundred forty-seven thousand, seven hundred sixty-three".