6894508961 has 4 divisors (see below), whose sum is σ = 6923117124. Its totient is φ = 6865900800.

The previous prime is 6894508927. The next prime is 6894509023. The reversal of 6894508961 is 1698054986.

It is a happy number.

6894508961 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4458099361 + 2436409600 = 66769^2 + 49360^2 .

It is a cyclic number.

It is not a de Polignac number, because 6894508961 - 2³⁰ = 5820767137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6894508897 and 6894508906.

It is not an unprimeable number, because it can be changed into a prime (6894508261) 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 in 3 ways as a sum of consecutive naturals, for example, 14303720 + ... + 14304201.

It is an arithmetic number, because the mean of its divisors is an integer number (1730779281).

Almost surely, 2^6894508961 is an apocalyptic number.

It is an amenable number.

6894508961 is a deficient number, since it is larger than the sum of its proper divisors (28608163).

6894508961 is a wasteful number, since it uses less digits than its factorization.

6894508961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28608162.

The product of its (nonzero) digits is 3732480, while the sum is 56.

The square root of 6894508961 is about 83033.1798800937. The cubic root of 6894508961 is about 1903.2731172800.

The spelling of 6894508961 in words is "six billion, eight hundred ninety-four million, five hundred eight thousand, nine hundred sixty-one".