700218217 has 2 divisors, whose sum is σ = 700218218. Its totient is φ = 700218216.

The previous prime is 700218209. The next prime is 700218221. The reversal of 700218217 is 712812007.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 372644416 + 327573801 = 19304^2 + 18099^2 .

It is a cyclic number.

It is not a de Polignac number, because 700218217 - 2³ = 700218209 is a prime.

It is not a weakly prime, because it can be changed into another prime (700218517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350109108 + 350109109.

It is an arithmetic number, because the mean of its divisors is an integer number (350109109).

Almost surely, 2^700218217 is an apocalyptic number.

It is an amenable number.

700218217 is a deficient number, since it is larger than the sum of its proper divisors (1).

700218217 is an equidigital number, since it uses as much as digits as its factorization.

700218217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 700218217 is about 26461.6367029706. The cubic root of 700218217 is about 887.9962567985.

The spelling of 700218217 in words is "seven hundred million, two hundred eighteen thousand, two hundred seventeen".