699868823 has 2 divisors, whose sum is σ = 699868824. Its totient is φ = 699868822.

The previous prime is 699868787. The next prime is 699868831. The reversal of 699868823 is 328868996.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 699868823 - 2⁸ = 699868567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (699868123) 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, 349934411 + 349934412.

It is an arithmetic number, because the mean of its divisors is an integer number (349934412).

Almost surely, 2^699868823 is an apocalyptic number.

699868823 is a deficient number, since it is larger than the sum of its proper divisors (1).

699868823 is an equidigital number, since it uses as much as digits as its factorization.

699868823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8957952, while the sum is 59.

The square root of 699868823 is about 26455.0339822122. The cubic root of 699868823 is about 887.8485351428.

The spelling of 699868823 in words is "six hundred ninety-nine million, eight hundred sixty-eight thousand, eight hundred twenty-three".