3520985 has 16 divisors (see below), whose sum is σ = 4791360. Its totient is φ = 2462400.

The previous prime is 3520973. The next prime is 3520987. The reversal of 3520985 is 5890253.

It is a happy number.

It is not a de Polignac number, because 3520985 - 2⁸ = 3520729 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3520987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191 + ... + 2660.

It is an arithmetic number, because the mean of its divisors is an integer number (299460).

Almost surely, 2^3520985 is an apocalyptic number.

It is an amenable number.

3520985 is a deficient number, since it is larger than the sum of its proper divisors (1270375).

3520985 is a wasteful number, since it uses less digits than its factorization.

3520985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 3520985 is about 1876.4287889499. The cubic root of 3520985 is about 152.1322861533.

The spelling of 3520985 in words is "three million, five hundred twenty thousand, nine hundred eighty-five".