3266640 has 120 divisors (see below), whose sum is σ = 11848200. Its totient is φ = 801792.

The previous prime is 3266617. The next prime is 3266671. The reversal of 3266640 is 466623.

It can be written as a sum of positive squares in 4 ways, for example, as 197136 + 3069504 = 444^2 + 1752^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9186 + ... + 9534.

It is an arithmetic number, because the mean of its divisors is an integer number (98735).

Almost surely, 2^3266640 is an apocalyptic number.

3266640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3266640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5924100).

3266640 is an abundant number, since it is smaller than the sum of its proper divisors (8581560).

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

3266640 is a wasteful number, since it uses less digits than its factorization.

3266640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 3266640 is about 1807.3848511039. The cubic root of 3266640 is about 148.3771728632.

The spelling of 3266640 in words is "three million, two hundred sixty-six thousand, six hundred forty".