699479863309 has 2 divisors, whose sum is σ = 699479863310. Its totient is φ = 699479863308.

The previous prime is 699479863307. The next prime is 699479863319. The reversal of 699479863309 is 903368974996.

699479863309 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., 665521482025 + 33958381284 = 815795^2 + 184278^2 .

It is a cyclic number.

It is not a de Polignac number, because 699479863309 - 2¹ = 699479863307 is a prime.

Together with 699479863307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (699479863307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349739931654 + 349739931655.

It is an arithmetic number, because the mean of its divisors is an integer number (349739931655).

Almost surely, 2^699479863309 is an apocalyptic number.

It is an amenable number.

699479863309 is a deficient number, since it is larger than the sum of its proper divisors (1).

699479863309 is an equidigital number, since it uses as much as digits as its factorization.

699479863309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476171136, while the sum is 73.

The spelling of 699479863309 in words is "six hundred ninety-nine billion, four hundred seventy-nine million, eight hundred sixty-three thousand, three hundred nine".