656650622839 has 2 divisors, whose sum is σ = 656650622840. Its totient is φ = 656650622838.

The previous prime is 656650622779. The next prime is 656650622861. The reversal of 656650622839 is 938226056656.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 656650622839 - 2¹⁹ = 656650098551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (656650628839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328325311419 + 328325311420.

It is an arithmetic number, because the mean of its divisors is an integer number (328325311420).

Almost surely, 2^656650622839 is an apocalyptic number.

656650622839 is a deficient number, since it is larger than the sum of its proper divisors (1).

656650622839 is an equidigital number, since it uses as much as digits as its factorization.

656650622839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27993600, while the sum is 58.

The spelling of 656650622839 in words is "six hundred fifty-six billion, six hundred fifty million, six hundred twenty-two thousand, eight hundred thirty-nine".