2067161 has 4 divisors (see below), whose sum is σ = 2071524. Its totient is φ = 2062800.

The previous prime is 2067137. The next prime is 2067187. The reversal of 2067161 is 1617602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1394761 + 672400 = 1181^2 + 820^2 .

It is a cyclic number.

It is not a de Polignac number, because 2067161 - 2¹⁰ = 2066137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2067101) 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 in 3 ways as a sum of consecutive naturals, for example, 1370 + ... + 2451.

It is an arithmetic number, because the mean of its divisors is an integer number (517881).

2^2067161 is an apocalyptic number.

It is an amenable number.

2067161 is a deficient number, since it is larger than the sum of its proper divisors (4363).

2067161 is an equidigital number, since it uses as much as digits as its factorization.

2067161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4362.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 2067161 is about 1437.7624977721. The cubic root of 2067161 is about 127.3868995744.

The spelling of 2067161 in words is "two million, sixty-seven thousand, one hundred sixty-one".