6604110746221 has 4 divisors (see below), whose sum is σ = 6605410517244. Its totient is φ = 6602810975200.

The previous prime is 6604110746179. The next prime is 6604110746287. The reversal of 6604110746221 is 1226470114066.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1023767570596 + 5580343175625 = 1011814^2 + 2362275^2 .

It is a cyclic number.

It is not a de Polignac number, because 6604110746221 - 2¹⁷ = 6604110615149 is a prime.

It is a super-2 number, since 2×6604110746221² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6604110746521) 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, 649877890 + ... + 649888051.

It is an arithmetic number, because the mean of its divisors is an integer number (1651352629311).

Almost surely, 2^{6604110746221} is an apocalyptic number.

It is an amenable number.

6604110746221 is a deficient number, since it is larger than the sum of its proper divisors (1299771023).

6604110746221 is a wasteful number, since it uses less digits than its factorization.

6604110746221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299771022.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 6604110746221 in words is "six trillion, six hundred four billion, one hundred ten million, seven hundred forty-six thousand, two hundred twenty-one".