3564405821 has 8 divisors (see below), whose sum is σ = 3614522304. Its totient is φ = 3514324320.

The previous prime is 3564405799. The next prime is 3564405883. The reversal of 3564405821 is 1285044653.

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

It is a cyclic number.

It is not a de Polignac number, because 3564405821 - 2¹⁰ = 3564404797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3564405121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249350 + ... + 263256.

It is an arithmetic number, because the mean of its divisors is an integer number (451815288).

Almost surely, 2^3564405821 is an apocalyptic number.

It is an amenable number.

3564405821 is a deficient number, since it is larger than the sum of its proper divisors (50116483).

3564405821 is a wasteful number, since it uses less digits than its factorization.

3564405821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17491.

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 3564405821 is about 59702.6450084081. The cubic root of 3564405821 is about 1527.5509855718.

The spelling of 3564405821 in words is "three billion, five hundred sixty-four million, four hundred five thousand, eight hundred twenty-one".