688214201 has 2 divisors, whose sum is σ = 688214202. Its totient is φ = 688214200.

The previous prime is 688214117. The next prime is 688214209. The reversal of 688214201 is 102412886.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 665898025 + 22316176 = 25805^2 + 4724^2 .

It is a cyclic number.

It is not a de Polignac number, because 688214201 - 2¹⁰ = 688213177 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (688214209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344107100 + 344107101.

It is an arithmetic number, because the mean of its divisors is an integer number (344107101).

Almost surely, 2^688214201 is an apocalyptic number.

It is an amenable number.

688214201 is a deficient number, since it is larger than the sum of its proper divisors (1).

688214201 is an equidigital number, since it uses as much as digits as its factorization.

688214201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 688214201 is about 26233.8369477284. The cubic root of 688214201 is about 882.8925996756.

The spelling of 688214201 in words is "six hundred eighty-eight million, two hundred fourteen thousand, two hundred one".