5895666821 has 4 divisors (see below), whose sum is σ = 6431636544. Its totient is φ = 5359697100.

The previous prime is 5895666817. The next prime is 5895666851. The reversal of 5895666821 is 1286665985.

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.

It is a cyclic number.

It is not a de Polignac number, because 5895666821 - 2² = 5895666817 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 (5895666851) 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, 267984845 + ... + 267984866.

It is an arithmetic number, because the mean of its divisors is an integer number (1607909136).

Almost surely, 2^5895666821 is an apocalyptic number.

It is an amenable number.

5895666821 is a deficient number, since it is larger than the sum of its proper divisors (535969723).

5895666821 is a wasteful number, since it uses less digits than its factorization.

5895666821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535969722.

The product of its digits is 6220800, while the sum is 56.

The square root of 5895666821 is about 76783.2457050365. The cubic root of 5895666821 is about 1806.5263926431.

The spelling of 5895666821 in words is "five billion, eight hundred ninety-five million, six hundred sixty-six thousand, eight hundred twenty-one".