6767828649 has 6 divisors (see below), whose sum is σ = 9775752506. Its totient is φ = 4511885760.

The previous prime is 6767828647. The next prime is 6767828651. The reversal of 6767828649 is 9468287676.

It is an interprime number because it is at equal distance from previous prime (6767828647) and next prime (6767828651).

It can be written as a sum of positive squares in only one way, i.e., 6016794624 + 751034025 = 77568^2 + 27405^2 .

It is not a de Polignac number, because 6767828649 - 2¹ = 6767828647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6767828647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 375990472 + ... + 375990489.

Almost surely, 2^6767828649 is an apocalyptic number.

It is an amenable number.

6767828649 is a deficient number, since it is larger than the sum of its proper divisors (3007923857).

6767828649 is a wasteful number, since it uses less digits than its factorization.

6767828649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751980967 (or 751980964 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 63.

The square root of 6767828649 is about 82266.8137768809. The cubic root of 6767828649 is about 1891.5440150182.

The spelling of 6767828649 in words is "six billion, seven hundred sixty-seven million, eight hundred twenty-eight thousand, six hundred forty-nine".