685950682723 has 2 divisors, whose sum is σ = 685950682724. Its totient is φ = 685950682722.

The previous prime is 685950682657. The next prime is 685950682741. The reversal of 685950682723 is 327286059586.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 685950682723 - 2¹³ = 685950674531 is a prime.

It is not a weakly prime, because it can be changed into another prime (685950682783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342975341361 + 342975341362.

It is an arithmetic number, because the mean of its divisors is an integer number (342975341362).

Almost surely, 2^685950682723 is an apocalyptic number.

685950682723 is a deficient number, since it is larger than the sum of its proper divisors (1).

685950682723 is an equidigital number, since it uses as much as digits as its factorization.

685950682723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43545600, while the sum is 61.

The spelling of 685950682723 in words is "six hundred eighty-five billion, nine hundred fifty million, six hundred eighty-two thousand, seven hundred twenty-three".