6647774349 has 16 divisors (see below), whose sum is σ = 9132023808. Its totient is φ = 4298444352.

The previous prime is 6647774303. The next prime is 6647774363. The reversal of 6647774349 is 9434777466.

It is not a de Polignac number, because 6647774349 - 2⁹ = 6647773837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6647774369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59277 + ... + 129650.

It is an arithmetic number, because the mean of its divisors is an integer number (570751488).

Almost surely, 2^6647774349 is an apocalyptic number.

It is an amenable number.

6647774349 is a deficient number, since it is larger than the sum of its proper divisors (2484249459).

6647774349 is a wasteful number, since it uses less digits than its factorization.

6647774349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189284.

The product of its digits is 21337344, while the sum is 57.

The square root of 6647774349 is about 81533.8846676644. The cubic root of 6647774349 is about 1880.2925405824.

The spelling of 6647774349 in words is "six billion, six hundred forty-seven million, seven hundred seventy-four thousand, three hundred forty-nine".