686923067 has 2 divisors, whose sum is σ = 686923068. Its totient is φ = 686923066.

The previous prime is 686923051. The next prime is 686923109. The reversal of 686923067 is 760329686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 686923067 - 2⁴ = 686923051 is a prime.

It is not a weakly prime, because it can be changed into another prime (686925067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343461533 + 343461534.

It is an arithmetic number, because the mean of its divisors is an integer number (343461534).

Almost surely, 2^686923067 is an apocalyptic number.

686923067 is a deficient number, since it is larger than the sum of its proper divisors (1).

686923067 is an equidigital number, since it uses as much as digits as its factorization.

686923067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 686923067 is about 26209.2172145602. The cubic root of 686923067 is about 882.3401329880.

The spelling of 686923067 in words is "six hundred eighty-six million, nine hundred twenty-three thousand, sixty-seven".