700643843 has 2 divisors, whose sum is σ = 700643844. Its totient is φ = 700643842.

The previous prime is 700643819. The next prime is 700643851. The reversal of 700643843 is 348346007.

It is a strong prime.

It is an emirp because it is prime and its reverse (348346007) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 700643843 - 2¹⁰ = 700642819 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (700643813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350321921 + 350321922.

It is an arithmetic number, because the mean of its divisors is an integer number (350321922).

Almost surely, 2^700643843 is an apocalyptic number.

700643843 is a deficient number, since it is larger than the sum of its proper divisors (1).

700643843 is an equidigital number, since it uses as much as digits as its factorization.

700643843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 700643843 is about 26469.6778031014. The cubic root of 700643843 is about 888.1761425026.

The spelling of 700643843 in words is "seven hundred million, six hundred forty-three thousand, eight hundred forty-three".