6886478629 has 2 divisors, whose sum is σ = 6886478630. Its totient is φ = 6886478628.

The previous prime is 6886478593. The next prime is 6886478639. The reversal of 6886478629 is 9268746886.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6181576129 + 704902500 = 78623^2 + 26550^2 .

It is a cyclic number.

It is not a de Polignac number, because 6886478629 - 2¹¹ = 6886476581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6886478639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3443239314 + 3443239315.

It is an arithmetic number, because the mean of its divisors is an integer number (3443239315).

Almost surely, 2^6886478629 is an apocalyptic number.

It is an amenable number.

6886478629 is a deficient number, since it is larger than the sum of its proper divisors (1).

6886478629 is an equidigital number, since it uses as much as digits as its factorization.

6886478629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55738368, while the sum is 64.

The square root of 6886478629 is about 82984.8096280277. The cubic root of 6886478629 is about 1902.5338887678.

The spelling of 6886478629 in words is "six billion, eight hundred eighty-six million, four hundred seventy-eight thousand, six hundred twenty-nine".