6649525677 has 4 divisors (see below), whose sum is σ = 8866034240. Its totient is φ = 4433017116.

The previous prime is 6649525651. The next prime is 6649525679. The reversal of 6649525677 is 7765259466.

6649525677 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6649525677 - 2¹⁹ = 6649001389 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 (6649525679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1108254277 + ... + 1108254282.

It is an arithmetic number, because the mean of its divisors is an integer number (2216508560).

Almost surely, 2^6649525677 is an apocalyptic number.

It is an amenable number.

6649525677 is a deficient number, since it is larger than the sum of its proper divisors (2216508563).

6649525677 is a wasteful number, since it uses less digits than its factorization.

6649525677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216508562.

The product of its digits is 19051200, while the sum is 57.

The square root of 6649525677 is about 81544.6238387302. The cubic root of 6649525677 is about 1880.4576444537.

The spelling of 6649525677 in words is "six billion, six hundred forty-nine million, five hundred twenty-five thousand, six hundred seventy-seven".