6705751978 has 8 divisors (see below), whose sum is σ = 10272641472. Its totient is φ = 3281538156.

The previous prime is 6705751973. The next prime is 6705751979. The reversal of 6705751978 is 8791575076.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (6705751973) 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, 35668800 + ... + 35668987.

It is an arithmetic number, because the mean of its divisors is an integer number (1284080184).

Almost surely, 2^6705751978 is an apocalyptic number.

6705751978 is a deficient number, since it is larger than the sum of its proper divisors (3566889494).

6705751978 is a wasteful number, since it uses less digits than its factorization.

6705751978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71337836.

The product of its (nonzero) digits is 3704400, while the sum is 55.

The square root of 6705751978 is about 81888.6559787129. The cubic root of 6705751978 is about 1885.7429617764.

The spelling of 6705751978 in words is "six billion, seven hundred five million, seven hundred fifty-one thousand, nine hundred seventy-eight".