3291906 has 16 divisors (see below), whose sum is σ = 6811200. Its totient is φ = 1059408.

The previous prime is 3291901. The next prime is 3291907. The reversal of 3291906 is 6091923.

It is a super-2 number, since 2×3291906² = 21673290225672, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3291901) 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, 9286 + ... + 9633.

It is an arithmetic number, because the mean of its divisors is an integer number (425700).

Almost surely, 2^3291906 is an apocalyptic number.

3291906 is an abundant number, since it is smaller than the sum of its proper divisors (3519294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3291906 is a wasteful number, since it uses less digits than its factorization.

3291906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18953.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 3291906 is about 1814.3610445554. The cubic root of 3291906 is about 148.7587345105.

The spelling of 3291906 in words is "three million, two hundred ninety-one thousand, nine hundred six".