6627677897 has 4 divisors (see below), whose sum is σ = 6632154516. Its totient is φ = 6623201280.

The previous prime is 6627677879. The next prime is 6627677909. The reversal of 6627677897 is 7987767266.

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 3636572416 + 2991105481 = 60304^2 + 54691^2 .

It is a cyclic number.

It is not a de Polignac number, because 6627677897 - 2¹⁰ = 6627676873 is a prime.

It is a super-2 number, since 2×6627677897² = 87852228612764685218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6627677827) 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, 2236088 + ... + 2239049.

It is an arithmetic number, because the mean of its divisors is an integer number (1658038629).

Almost surely, 2^6627677897 is an apocalyptic number.

It is an amenable number.

6627677897 is a deficient number, since it is larger than the sum of its proper divisors (4476619).

6627677897 is a wasteful number, since it uses less digits than its factorization.

6627677897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4476618.

The product of its digits is 74680704, while the sum is 65.

The square root of 6627677897 is about 81410.5515090028. The cubic root of 6627677897 is about 1878.3958982764.

The spelling of 6627677897 in words is "six billion, six hundred twenty-seven million, six hundred seventy-seven thousand, eight hundred ninety-seven".