206162401 has 2 divisors, whose sum is σ = 206162402. Its totient is φ = 206162400.

The previous prime is 206162399. The next prime is 206162441. The reversal of 206162401 is 104261602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196700625 + 9461776 = 14025^2 + 3076^2 .

It is a cyclic number.

It is not a de Polignac number, because 206162401 - 2¹ = 206162399 is a prime.

Together with 206162399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (206162441) 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, 103081200 + 103081201.

It is an arithmetic number, because the mean of its divisors is an integer number (103081201).

Almost surely, 2^206162401 is an apocalyptic number.

It is an amenable number.

206162401 is a deficient number, since it is larger than the sum of its proper divisors (1).

206162401 is an equidigital number, since it uses as much as digits as its factorization.

206162401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 206162401 is about 14358.3564867293. The cubic root of 206162401 is about 590.7492167317.

The spelling of 206162401 in words is "two hundred six million, one hundred sixty-two thousand, four hundred one".