6400201 has 2 divisors, whose sum is σ = 6400202. Its totient is φ = 6400200.

The previous prime is 6400193. The next prime is 6400231. The reversal of 6400201 is 1020046.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6125625 + 274576 = 2475^2 + 524^2 .

It is a cyclic number.

It is not a de Polignac number, because 6400201 - 2³ = 6400193 is a prime.

6400201 is a lucky number.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (6400231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3200100 + 3200101.

It is an arithmetic number, because the mean of its divisors is an integer number (3200101).

Almost surely, 2^6400201 is an apocalyptic number.

It is an amenable number.

6400201 is a deficient number, since it is larger than the sum of its proper divisors (1).

6400201 is an equidigital number, since it uses as much as digits as its factorization.

6400201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 6400201 is about 2529.8618539359. The cubic root of 6400201 is about 185.6654969895.

Adding to 6400201 its reverse (1020046), we get a palindrome (7420247).

The spelling of 6400201 in words is "six million, four hundred thousand, two hundred one".