699609723823 has 2 divisors, whose sum is σ = 699609723824. Its totient is φ = 699609723822.

The previous prime is 699609723793. The next prime is 699609723851. The reversal of 699609723823 is 328327906996.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 699609723823 - 2²⁹ = 699072852911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (699409723823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349804861911 + 349804861912.

It is an arithmetic number, because the mean of its divisors is an integer number (349804861912).

Almost surely, 2^699609723823 is an apocalyptic number.

699609723823 is a deficient number, since it is larger than the sum of its proper divisors (1).

699609723823 is an equidigital number, since it uses as much as digits as its factorization.

699609723823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52907904, while the sum is 64.

The spelling of 699609723823 in words is "six hundred ninety-nine billion, six hundred nine million, seven hundred twenty-three thousand, eight hundred twenty-three".