1366201 has 4 divisors (see below), whose sum is σ = 1410304. Its totient is φ = 1322100.

The previous prime is 1366187. The next prime is 1366213. The reversal of 1366201 is 1026631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1026631 = 941 ⋅1091.

It is a cyclic number.

It is not a de Polignac number, because 1366201 - 2¹³ = 1358009 is a prime.

It is a Duffinian number.

1366201 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1366241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22005 + ... + 22066.

It is an arithmetic number, because the mean of its divisors is an integer number (352576).

2^1366201 is an apocalyptic number.

It is an amenable number.

1366201 is a deficient number, since it is larger than the sum of its proper divisors (44103).

1366201 is an equidigital number, since it uses as much as digits as its factorization.

1366201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44102.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1366201 is about 1168.8460120991. The cubic root of 1366201 is about 110.9612991723.

The spelling of 1366201 in words is "one million, three hundred sixty-six thousand, two hundred one".