700665643 has 2 divisors, whose sum is σ = 700665644. Its totient is φ = 700665642.

The previous prime is 700665631. The next prime is 700665649. The reversal of 700665643 is 346566007.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 700665643 - 2²¹ = 698568491 is a prime.

It is not a weakly prime, because it can be changed into another prime (700665649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350332821 + 350332822.

It is an arithmetic number, because the mean of its divisors is an integer number (350332822).

Almost surely, 2^700665643 is an apocalyptic number.

700665643 is a deficient number, since it is larger than the sum of its proper divisors (1).

700665643 is an equidigital number, since it uses as much as digits as its factorization.

700665643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 700665643 is about 26470.0895918393. The cubic root of 700665643 is about 888.1853540487.

The spelling of 700665643 in words is "seven hundred million, six hundred sixty-five thousand, six hundred forty-three".