686825263 has 2 divisors, whose sum is σ = 686825264. Its totient is φ = 686825262.

The previous prime is 686825257. The next prime is 686825297. The reversal of 686825263 is 362528686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 686825263 - 2²⁵ = 653270831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (686825203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343412631 + 343412632.

It is an arithmetic number, because the mean of its divisors is an integer number (343412632).

Almost surely, 2^686825263 is an apocalyptic number.

686825263 is a deficient number, since it is larger than the sum of its proper divisors (1).

686825263 is an equidigital number, since it uses as much as digits as its factorization.

686825263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 829440, while the sum is 46.

The square root of 686825263 is about 26207.3513159953. The cubic root of 686825263 is about 882.2982551832.

It can be divided in two parts, 6868 and 25263, that added together give a triangular number (32131 = T₂₅₃).

The spelling of 686825263 in words is "six hundred eighty-six million, eight hundred twenty-five thousand, two hundred sixty-three".