700407991 has 2 divisors, whose sum is σ = 700407992. Its totient is φ = 700407990.

The previous prime is 700407977. The next prime is 700408031. The reversal of 700407991 is 199704007.

It is a weak prime.

It is an emirp because it is prime and its reverse (199704007) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 700407991 - 2⁷ = 700407863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 700407991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (700407941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350203995 + 350203996.

It is an arithmetic number, because the mean of its divisors is an integer number (350203996).

Almost surely, 2^700407991 is an apocalyptic number.

700407991 is a deficient number, since it is larger than the sum of its proper divisors (1).

700407991 is an equidigital number, since it uses as much as digits as its factorization.

700407991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 700407991 is about 26465.2222926617. Note that the first 4 decimals coincide. The cubic root of 700407991 is about 888.0764714972.

The spelling of 700407991 in words is "seven hundred million, four hundred seven thousand, nine hundred ninety-one".