686232778003 has 2 divisors, whose sum is σ = 686232778004. Its totient is φ = 686232778002.

The previous prime is 686232777991. The next prime is 686232778039. The reversal of 686232778003 is 300877232686.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-686232778003 is a prime.

It is not a weakly prime, because it can be changed into another prime (686232778073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343116389001 + 343116389002.

It is an arithmetic number, because the mean of its divisors is an integer number (343116389002).

Almost surely, 2^686232778003 is an apocalyptic number.

686232778003 is a deficient number, since it is larger than the sum of its proper divisors (1).

686232778003 is an equidigital number, since it uses as much as digits as its factorization.

686232778003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4064256, while the sum is 52.

The spelling of 686232778003 in words is "six hundred eighty-six billion, two hundred thirty-two million, seven hundred seventy-eight thousand, three".