3276405 has 24 divisors (see below), whose sum is σ = 6196320. Its totient is φ = 1588320.

The previous prime is 3276401. The next prime is 3276409. The reversal of 3276405 is 5046723.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3276401) and next prime (3276409).

It is not a de Polignac number, because 3276405 - 2² = 3276401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3276401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2815 + ... + 3804.

It is an arithmetic number, because the mean of its divisors is an integer number (258180).

Almost surely, 2^3276405 is an apocalyptic number.

It is an amenable number.

3276405 is a deficient number, since it is larger than the sum of its proper divisors (2919915).

3276405 is a wasteful number, since it uses less digits than its factorization.

3276405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6641 (or 6638 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 3276405 is about 1810.0842521828. The cubic root of 3276405 is about 148.5248742470.

It can be divided in two parts, 327640 and 5, that added together give a triangular number (327645 = T₈₀₉).

The spelling of 3276405 in words is "three million, two hundred seventy-six thousand, four hundred five".