3561005 has 16 divisors (see below), whose sum is σ = 4955904. Its totient is φ = 2405760.

The previous prime is 3560993. The next prime is 3561023. The reversal of 3561005 is 5001653.

It is not a de Polignac number, because 3561005 - 2¹⁶ = 3495469 is a prime.

It is a super-2 number, since 2×3561005² = 25361513220050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1769 + ... + 3201.

It is an arithmetic number, because the mean of its divisors is an integer number (309744).

Almost surely, 2^3561005 is an apocalyptic number.

3561005 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3561005 is a deficient number, since it is larger than the sum of its proper divisors (1394899).

3561005 is a wasteful number, since it uses less digits than its factorization.

3561005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 3561005 is about 1887.0625320853. The cubic root of 3561005 is about 152.7065015794.

Adding to 3561005 its reverse (5001653), we get a palindrome (8562658).

The spelling of 3561005 in words is "three million, five hundred sixty-one thousand, five".