6627765221 has 8 divisors (see below), whose sum is σ = 8263187904. Its totient is φ = 5164492320.

The previous prime is 6627765211. The next prime is 6627765233. The reversal of 6627765221 is 1225677266.

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 6627765221 - 2¹⁴ = 6627748837 is a prime.

It is a super-3 number, since 3×6627765221³ (a number of 30 digits) contains 333 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 (6627765211) 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, 43037360 + ... + 43037513.

It is an arithmetic number, because the mean of its divisors is an integer number (1032898488).

Almost surely, 2^6627765221 is an apocalyptic number.

It is an amenable number.

6627765221 is a deficient number, since it is larger than the sum of its proper divisors (1635422683).

6627765221 is a wasteful number, since it uses less digits than its factorization.

6627765221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86074891.

The product of its digits is 423360, while the sum is 44.

The square root of 6627765221 is about 81411.0878259221. The cubic root of 6627765221 is about 1878.4041479392.

The spelling of 6627765221 in words is "six billion, six hundred twenty-seven million, seven hundred sixty-five thousand, two hundred twenty-one".