72649327 has 2 divisors, whose sum is σ = 72649328. Its totient is φ = 72649326.

The previous prime is 72649309. The next prime is 72649349. The reversal of 72649327 is 72394627.

It is a weak prime.

It is an emirp because it is prime and its reverse (72394627) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72649327 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72649327.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72649397) 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, 36324663 + 36324664.

It is an arithmetic number, because the mean of its divisors is an integer number (36324664).

Almost surely, 2^72649327 is an apocalyptic number.

72649327 is a deficient number, since it is larger than the sum of its proper divisors (1).

72649327 is an equidigital number, since it uses as much as digits as its factorization.

72649327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 40.

The square root of 72649327 is about 8523.4574557512. The cubic root of 72649327 is about 417.2636299330.

The spelling of 72649327 in words is "seventy-two million, six hundred forty-nine thousand, three hundred twenty-seven".