972056647 has 2 divisors, whose sum is σ = 972056648. Its totient is φ = 972056646.

The previous prime is 972056633. The next prime is 972056653. The reversal of 972056647 is 746650279.

972056647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (746650279) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-972056647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 972056597 and 972056606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (972056047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486028323 + 486028324.

It is an arithmetic number, because the mean of its divisors is an integer number (486028324).

Almost surely, 2^972056647 is an apocalyptic number.

972056647 is a deficient number, since it is larger than the sum of its proper divisors (1).

972056647 is an equidigital number, since it uses as much as digits as its factorization.

972056647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 972056647 is about 31177.8229996900. The cubic root of 972056647 is about 990.5974175325.

The spelling of 972056647 in words is "nine hundred seventy-two million, fifty-six thousand, six hundred forty-seven".