699868993 has 2 divisors, whose sum is σ = 699868994. Its totient is φ = 699868992.

The previous prime is 699868991. The next prime is 699868999. The reversal of 699868993 is 399868996.

699868993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 492307344 + 207561649 = 22188^2 + 14407^2 .

It is a cyclic number.

It is not a de Polignac number, because 699868993 - 2¹ = 699868991 is a prime.

Together with 699868991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (699868991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349934496 + 349934497.

It is an arithmetic number, because the mean of its divisors is an integer number (349934497).

Almost surely, 2^699868993 is an apocalyptic number.

It is an amenable number.

699868993 is a deficient number, since it is larger than the sum of its proper divisors (1).

699868993 is an equidigital number, since it uses as much as digits as its factorization.

699868993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45349632, while the sum is 67.

The square root of 699868993 is about 26455.0371952110. The cubic root of 699868993 is about 887.8486070298.

The spelling of 699868993 in words is "six hundred ninety-nine million, eight hundred sixty-eight thousand, nine hundred ninety-three".