616707647 has 2 divisors, whose sum is σ = 616707648. Its totient is φ = 616707646.

The previous prime is 616707631. The next prime is 616707701. The reversal of 616707647 is 746707616.

616707647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 616707647 - 2⁴ = 616707631 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 616707598 and 616707607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616707617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308353823 + 308353824.

It is an arithmetic number, because the mean of its divisors is an integer number (308353824).

Almost surely, 2^616707647 is an apocalyptic number.

616707647 is a deficient number, since it is larger than the sum of its proper divisors (1).

616707647 is an equidigital number, since it uses as much as digits as its factorization.

616707647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 296352, while the sum is 44.

The square root of 616707647 is about 24833.5991551768. The cubic root of 616707647 is about 851.1898662386.

The spelling of 616707647 in words is "six hundred sixteen million, seven hundred seven thousand, six hundred forty-seven".