72935647 has 2 divisors, whose sum is σ = 72935648. Its totient is φ = 72935646.

The previous prime is 72935581. The next prime is 72935657. The reversal of 72935647 is 74653927.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72935647 - 2¹¹ = 72933599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72935657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36467823 + 36467824.

It is an arithmetic number, because the mean of its divisors is an integer number (36467824).

Almost surely, 2^72935647 is an apocalyptic number.

72935647 is a deficient number, since it is larger than the sum of its proper divisors (1).

72935647 is an equidigital number, since it uses as much as digits as its factorization.

72935647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 43.

The square root of 72935647 is about 8540.2369405070. The cubic root of 72935647 is about 417.8110739369.

The spelling of 72935647 in words is "seventy-two million, nine hundred thirty-five thousand, six hundred forty-seven".