6105220621 has 8 divisors (see below), whose sum is σ = 6316669080. Its totient is φ = 5893833792.

The previous prime is 6105220529. The next prime is 6105220651. The reversal of 6105220621 is 1260225016.

It can be written as a sum of positive squares in 4 ways, for example, as 475719721 + 5629500900 = 21811^2 + 75030^2 .

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

It is not a de Polignac number, because 6105220621 - 2⁷ = 6105220493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6105220651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287071 + ... + 307603.

It is an arithmetic number, because the mean of its divisors is an integer number (789583635).

Almost surely, 2^6105220621 is an apocalyptic number.

It is an amenable number.

6105220621 is a deficient number, since it is larger than the sum of its proper divisors (211448459).

6105220621 is a wasteful number, since it uses less digits than its factorization.

6105220621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30815.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 6105220621 is about 78135.9112124508. The cubic root of 6105220621 is about 1827.6812401758.

Adding to 6105220621 its reverse (1260225016), we get a palindrome (7365445637).

It can be divided in two parts, 6105220 and 621, that added together give a square (6105841 = 2471²).

The spelling of 6105220621 in words is "six billion, one hundred five million, two hundred twenty thousand, six hundred twenty-one".