6240686869 has 2 divisors, whose sum is σ = 6240686870. Its totient is φ = 6240686868.

The previous prime is 6240686843. The next prime is 6240686897. The reversal of 6240686869 is 9686860426.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5716872100 + 523814769 = 75610^2 + 22887^2 .

It is a cyclic number.

It is not a de Polignac number, because 6240686869 - 2⁹ = 6240686357 is a prime.

It is a super-2 number, since 2×6240686869² = 77892345193818046322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6240686839) 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 as a sum of consecutive naturals, namely, 3120343434 + 3120343435.

It is an arithmetic number, because the mean of its divisors is an integer number (3120343435).

Almost surely, 2^6240686869 is an apocalyptic number.

It is an amenable number.

6240686869 is a deficient number, since it is larger than the sum of its proper divisors (1).

6240686869 is an equidigital number, since it uses as much as digits as its factorization.

6240686869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5971968, while the sum is 55.

The square root of 6240686869 is about 78998.0181333684. The cubic root of 6240686869 is about 1841.1003646856.

The spelling of 6240686869 in words is "six billion, two hundred forty million, six hundred eighty-six thousand, eight hundred sixty-nine".