852686657 has 2 divisors, whose sum is σ = 852686658. Its totient is φ = 852686656.

The previous prime is 852686599. The next prime is 852686671. The reversal of 852686657 is 756686258.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 722749456 + 129937201 = 26884^2 + 11399^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-852686657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 852686599 and 852686608.

It is not a weakly prime, because it can be changed into another prime (852686677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426343328 + 426343329.

It is an arithmetic number, because the mean of its divisors is an integer number (426343329).

Almost surely, 2^852686657 is an apocalyptic number.

It is an amenable number.

852686657 is a deficient number, since it is larger than the sum of its proper divisors (1).

852686657 is an equidigital number, since it uses as much as digits as its factorization.

852686657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4838400, while the sum is 53.

The square root of 852686657 is about 29200.7989103038. The cubic root of 852686657 is about 948.2652207803.

The spelling of 852686657 in words is "eight hundred fifty-two million, six hundred eighty-six thousand, six hundred fifty-seven".