3528681 has 16 divisors (see below), whose sum is σ = 5105856. Its totient is φ = 2154816.

The previous prime is 3528659. The next prime is 3528743. The reversal of 3528681 is 1868253.

It is a happy number.

It is not a de Polignac number, because 3528681 - 2⁵ = 3528649 is a prime.

It is a super-2 number, since 2×3528681² = 24903179199522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3528631) 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, 6486 + ... + 7008.

It is an arithmetic number, because the mean of its divisors is an integer number (319116).

Almost surely, 2^3528681 is an apocalyptic number.

It is an amenable number.

3528681 is a deficient number, since it is larger than the sum of its proper divisors (1577175).

3528681 is a wasteful number, since it uses less digits than its factorization.

3528681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712.

The product of its digits is 11520, while the sum is 33.

The square root of 3528681 is about 1878.4783735779. The cubic root of 3528681 is about 152.2430466436.

The spelling of 3528681 in words is "three million, five hundred twenty-eight thousand, six hundred eighty-one".