3066391 has 8 divisors (see below), whose sum is σ = 3248000. Its totient is φ = 2886840.

The previous prime is 3066377. The next prime is 3066397. The reversal of 3066391 is 1936603.

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

It is a cyclic number.

It is not a de Polignac number, because 3066391 - 2⁷ = 3066263 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 (3066397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3376 + ... + 4186.

It is an arithmetic number, because the mean of its divisors is an integer number (406000).

Almost surely, 2^3066391 is an apocalyptic number.

3066391 is the 1108-th centered pentagonal number.

3066391 is a deficient number, since it is larger than the sum of its proper divisors (181609).

3066391 is a wasteful number, since it uses less digits than its factorization.

3066391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 3066391 is about 1751.1113613931. Note that the first 3 decimals coincide. The cubic root of 3066391 is about 145.2811193115.

The spelling of 3066391 in words is "three million, sixty-six thousand, three hundred ninety-one".