3486640 has 40 divisors (see below), whose sum is σ = 8311968. Its totient is φ = 1359360.

The previous prime is 3486631. The next prime is 3486643. The reversal of 3486640 is 466843.

3486640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (3486643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2749 + ... + 3811.

Almost surely, 2^3486640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3486640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4155984).

3486640 is an abundant number, since it is smaller than the sum of its proper divisors (4825328).

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

3486640 is a wasteful number, since it uses less digits than its factorization.

3486640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117 (or 1111 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 3486640 is about 1867.2546692939. The cubic root of 3486640 is about 151.6360173680.

The spelling of 3486640 in words is "three million, four hundred eighty-six thousand, six hundred forty".