6221561585 has 8 divisors (see below), whose sum is σ = 7706708736. Its totient is φ = 4816692720.

The previous prime is 6221561569. The next prime is 6221561629. The reversal of 6221561585 is 5851651226.

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

It is not a de Polignac number, because 6221561585 - 2⁴ = 6221561569 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20069399 + ... + 20069708.

It is an arithmetic number, because the mean of its divisors is an integer number (963338592).

Almost surely, 2^6221561585 is an apocalyptic number.

It is an amenable number.

6221561585 is a deficient number, since it is larger than the sum of its proper divisors (1485147151).

6221561585 is a wasteful number, since it uses less digits than its factorization.

6221561585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40139143.

The product of its digits is 144000, while the sum is 41.

The square root of 6221561585 is about 78876.8761108096. The cubic root of 6221561585 is about 1839.2176873786.

The spelling of 6221561585 in words is "six billion, two hundred twenty-one million, five hundred sixty-one thousand, five hundred eighty-five".