3560021 has 8 divisors (see below), whose sum is σ = 3832344. Its totient is φ = 3294720.

The previous prime is 3560003. The next prime is 3560023. The reversal of 3560021 is 1200653.

3560021 = T₁₇₈ + T₁₇₉ + ... + T₂₉₉.

3560021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 81796 + 3478225 = 286^2 + 1865^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3560021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3560023) 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, 680 + ... + 2753.

It is an arithmetic number, because the mean of its divisors is an integer number (479043).

Almost surely, 2^3560021 is an apocalyptic number.

It is an amenable number.

3560021 is a deficient number, since it is larger than the sum of its proper divisors (272323).

3560021 is a wasteful number, since it uses less digits than its factorization.

3560021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3511.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 3560021 is about 1886.8017913920. The cubic root of 3560021 is about 152.6924346666.

Adding to 3560021 its reverse (1200653), we get a palindrome (4760674).

The spelling of 3560021 in words is "three million, five hundred sixty thousand, twenty-one".