6991466770 has 8 divisors (see below), whose sum is σ = 12584640204. Its totient is φ = 2796586704.

The previous prime is 6991466753. The next prime is 6991466771. The reversal of 6991466770 is 776641996.

It can be written as a sum of positive squares in 2 ways, for example, as 6625471609 + 365995161 = 81397^2 + 19131^2 .

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 (6991466771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349573329 + ... + 349573348.

Almost surely, 2^6991466770 is an apocalyptic number.

6991466770 is a deficient number, since it is larger than the sum of its proper divisors (5593173434).

6991466770 is a wasteful number, since it uses less digits than its factorization.

6991466770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699146684.

The product of its (nonzero) digits is 3429216, while the sum is 55.

The square root of 6991466770 is about 83614.9912994075. The cubic root of 6991466770 is about 1912.1535580483.

The spelling of 6991466770 in words is "six billion, nine hundred ninety-one million, four hundred sixty-six thousand, seven hundred seventy".