3530861 has 4 divisors (see below), whose sum is σ = 3536412. Its totient is φ = 3525312.

The previous prime is 3530851. The next prime is 3530867. The reversal of 3530861 is 1680353.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1680353 = 631 ⋅2663.

It can be written as a sum of positive squares in 2 ways, for example, as 2044900 + 1485961 = 1430^2 + 1219^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3530861 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3530861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3530867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1676 + ... + 3141.

It is an arithmetic number, because the mean of its divisors is an integer number (884103).

Almost surely, 2^3530861 is an apocalyptic number.

It is an amenable number.

3530861 is a deficient number, since it is larger than the sum of its proper divisors (5551).

3530861 is an equidigital number, since it uses as much as digits as its factorization.

3530861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5550.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 3530861 is about 1879.0585408656. The cubic root of 3530861 is about 152.2743918326.

The spelling of 3530861 in words is "three million, five hundred thirty thousand, eight hundred sixty-one".