6877759949 has 4 divisors (see below), whose sum is σ = 6877925820. Its totient is φ = 6877594080.

The previous prime is 6877759927. The next prime is 6877759957. The reversal of 6877759949 is 9499577786.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1200137449 + 5677622500 = 34643^2 + 75350^2 .

It is a cyclic number.

It is not a de Polignac number, because 6877759949 - 2¹² = 6877755853 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 (6877759909) 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, 40457 + ... + 124065.

It is an arithmetic number, because the mean of its divisors is an integer number (1719481455).

Almost surely, 2^6877759949 is an apocalyptic number.

It is an amenable number.

6877759949 is a deficient number, since it is larger than the sum of its proper divisors (165871).

6877759949 is an equidigital number, since it uses as much as digits as its factorization.

6877759949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165870.

The product of its digits is 240045120, while the sum is 71.

The square root of 6877759949 is about 82932.2612075663. The cubic root of 6877759949 is about 1901.7306437293.

The spelling of 6877759949 in words is "six billion, eight hundred seventy-seven million, seven hundred fifty-nine thousand, nine hundred forty-nine".