647822652859 has 2 divisors, whose sum is σ = 647822652860. Its totient is φ = 647822652858.

The previous prime is 647822652847. The next prime is 647822652929. The reversal of 647822652859 is 958256228746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 647822652859 - 2⁷ = 647822652731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 647822652859.

It is not a weakly prime, because it can be changed into another prime (647822650859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323911326429 + 323911326430.

It is an arithmetic number, because the mean of its divisors is an integer number (323911326430).

Almost surely, 2^647822652859 is an apocalyptic number.

647822652859 is a deficient number, since it is larger than the sum of its proper divisors (1).

647822652859 is an equidigital number, since it uses as much as digits as its factorization.

647822652859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116121600, while the sum is 64.

The spelling of 647822652859 in words is "six hundred forty-seven billion, eight hundred twenty-two million, six hundred fifty-two thousand, eight hundred fifty-nine".