3520686 has 16 divisors (see below), whose sum is σ = 7583184. Its totient is φ = 1083264.

The previous prime is 3520669. The next prime is 3520691. The reversal of 3520686 is 6860253.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22491 + ... + 22646.

It is an arithmetic number, because the mean of its divisors is an integer number (473949).

Almost surely, 2^3520686 is an apocalyptic number.

3520686 is an abundant number, since it is smaller than the sum of its proper divisors (4062498).

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

3520686 is a wasteful number, since it uses less digits than its factorization.

3520686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45155.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 3520686 is about 1876.3491146373. The cubic root of 3520686 is about 152.1279797029.

The spelling of 3520686 in words is "three million, five hundred twenty thousand, six hundred eighty-six".