6978808894 has 8 divisors (see below), whose sum is σ = 10473936048. Its totient is φ = 3487496880.

The previous prime is 6978808847. The next prime is 6978808913. The reversal of 6978808894 is 4988088796.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 949207 + ... + 956530.

It is an arithmetic number, because the mean of its divisors is an integer number (1309242006).

Almost surely, 2^6978808894 is an apocalyptic number.

6978808894 is a deficient number, since it is larger than the sum of its proper divisors (3495127154).

6978808894 is a wasteful number, since it uses less digits than its factorization.

6978808894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907570.

The product of its (nonzero) digits is 55738368, while the sum is 67.

The square root of 6978808894 is about 83539.2655821201. The cubic root of 6978808894 is about 1910.9988921806.

The spelling of 6978808894 in words is "six billion, nine hundred seventy-eight million, eight hundred eight thousand, eight hundred ninety-four".