699648043 has 2 divisors, whose sum is σ = 699648044. Its totient is φ = 699648042.

The previous prime is 699648041. The next prime is 699648121. The reversal of 699648043 is 340846996.

699648043 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 is a cyclic number.

It is not a de Polignac number, because 699648043 - 2¹ = 699648041 is a prime.

Together with 699648041, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (699648041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349824021 + 349824022.

It is an arithmetic number, because the mean of its divisors is an integer number (349824022).

Almost surely, 2^699648043 is an apocalyptic number.

699648043 is a deficient number, since it is larger than the sum of its proper divisors (1).

699648043 is an equidigital number, since it uses as much as digits as its factorization.

699648043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The square root of 699648043 is about 26450.8609122652. The cubic root of 699648043 is about 887.7551653528.

The spelling of 699648043 in words is "six hundred ninety-nine million, six hundred forty-eight thousand, forty-three".