3646540 has 24 divisors (see below), whose sum is σ = 7846272. Its totient is φ = 1422720.

The previous prime is 3646523. The next prime is 3646541. The reversal of 3646540 is 456463.

3646540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3646499 and 3646508.

It is not an unprimeable number, because it can be changed into a prime (3646541) 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, 1404 + ... + 3043.

It is an arithmetic number, because the mean of its divisors is an integer number (326928).

Almost surely, 2^3646540 is an apocalyptic number.

It is an amenable number.

3646540 is an abundant number, since it is smaller than the sum of its proper divisors (4199732).

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

3646540 is a wasteful number, since it uses less digits than its factorization.

3646540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4497 (or 4495 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 3646540 is about 1909.5915793698. The cubic root of 3646540 is about 153.9195059185.

It can be divided in two parts, 3646 and 540, that added together give a triangular number (4186 = T₉₁).

The spelling of 3646540 in words is "three million, six hundred forty-six thousand, five hundred forty".