684250201 has 2 divisors, whose sum is σ = 684250202. Its totient is φ = 684250200.

The previous prime is 684250183. The next prime is 684250241. The reversal of 684250201 is 102052486.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 651474576 + 32775625 = 25524^2 + 5725^2 .

It is a cyclic number.

It is not a de Polignac number, because 684250201 - 2²⁹ = 147379289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 684250201.

It is not a weakly prime, because it can be changed into another prime (684250241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342125100 + 342125101.

It is an arithmetic number, because the mean of its divisors is an integer number (342125101).

Almost surely, 2^684250201 is an apocalyptic number.

It is an amenable number.

684250201 is a deficient number, since it is larger than the sum of its proper divisors (1).

684250201 is an equidigital number, since it uses as much as digits as its factorization.

684250201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 684250201 is about 26158.1765610679. The cubic root of 684250201 is about 881.1942295843.

The spelling of 684250201 in words is "six hundred eighty-four million, two hundred fifty thousand, two hundred one".