3564861 has 4 divisors (see below), whose sum is σ = 4753152. Its totient is φ = 2376572.

The previous prime is 3564859. The next prime is 3564863. The reversal of 3564861 is 1684653.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1684653 = 3 ⋅561551.

It is an interprime number because it is at equal distance from previous prime (3564859) and next prime (3564863).

It is a cyclic number.

It is not a de Polignac number, because 3564861 - 2¹ = 3564859 is a prime.

It is a D-number.

3564861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3564863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 594141 + ... + 594146.

It is an arithmetic number, because the mean of its divisors is an integer number (1188288).

Almost surely, 2^3564861 is an apocalyptic number.

It is an amenable number.

3564861 is a deficient number, since it is larger than the sum of its proper divisors (1188291).

3564861 is a wasteful number, since it uses less digits than its factorization.

3564861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188290.

The product of its digits is 17280, while the sum is 33.

The square root of 3564861 is about 1888.0839494048. The cubic root of 3564861 is about 152.7616006183.

The spelling of 3564861 in words is "three million, five hundred sixty-four thousand, eight hundred sixty-one".