2067391 has 4 divisors (see below), whose sum is σ = 2071552. Its totient is φ = 2063232.

The previous prime is 2067383. The next prime is 2067407. The reversal of 2067391 is 1937602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1937602 = 2 ⋅968801.

It is a cyclic number.

It is not a de Polignac number, because 2067391 - 2³ = 2067383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2067491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1215 + ... + 2368.

It is an arithmetic number, because the mean of its divisors is an integer number (517888).

2^2067391 is an apocalyptic number.

2067391 is a deficient number, since it is larger than the sum of its proper divisors (4161).

2067391 is an equidigital number, since it uses as much as digits as its factorization.

2067391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4160.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 2067391 is about 1437.8424809415. The cubic root of 2067391 is about 127.3916239122.

The spelling of 2067391 in words is "two million, sixty-seven thousand, three hundred ninety-one".