2011667 has 8 divisors (see below), whose sum is σ = 2325600. Its totient is φ = 1704384.

The previous prime is 2011657. The next prime is 2011673. The reversal of 2011667 is 7661102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011637) 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 7 ways as a sum of consecutive naturals, for example, 992 + ... + 2237.

It is an arithmetic number, because the mean of its divisors is an integer number (290700).

2^2011667 is an apocalyptic number.

2011667 is a deficient number, since it is larger than the sum of its proper divisors (313933).

2011667 is an equidigital number, since it uses as much as digits as its factorization.

2011667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3325.

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

The square root of 2011667 is about 1418.3324716018. The cubic root of 2011667 is about 126.2366217893.

Adding to 2011667 its reverse (7661102), we get a palindrome (9672769).

The spelling of 2011667 in words is "two million, eleven thousand, six hundred sixty-seven".