6867257649 has 32 divisors (see below), whose sum is σ = 10746382080. Its totient is φ = 3818880000.

The previous prime is 6867257597. The next prime is 6867257651. The reversal of 6867257649 is 9467527686.

It is not a de Polignac number, because 6867257649 - 2⁷ = 6867257521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6867257592 and 6867257601.

It is not an unprimeable number, because it can be changed into a prime (6867257689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 342399 + ... + 361899.

It is an arithmetic number, because the mean of its divisors is an integer number (335824440).

Almost surely, 2^6867257649 is an apocalyptic number.

It is an amenable number.

6867257649 is a deficient number, since it is larger than the sum of its proper divisors (3879124431).

6867257649 is a wasteful number, since it uses less digits than its factorization.

6867257649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19961.

The product of its digits is 30481920, while the sum is 60.

The square root of 6867257649 is about 82868.9184736956. The cubic root of 6867257649 is about 1900.7621733500.

The spelling of 6867257649 in words is "six billion, eight hundred sixty-seven million, two hundred fifty-seven thousand, six hundred forty-nine".