6699691008 has 176 divisors, whose sum is σ = 19922386560. Its totient is φ = 2224115712.

The previous prime is 6699691001. The next prime is 6699691073. The reversal of 6699691008 is 8001969966.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (6699691001) 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 15 ways as a sum of consecutive naturals, for example, 12247791 + ... + 12248337.

Almost surely, 2^6699691008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6699691008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9961193280).

6699691008 is an abundant number, since it is smaller than the sum of its proper divisors (13222695552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6699691008 is a wasteful number, since it uses less digits than its factorization.

6699691008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019 (or 995 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The square root of 6699691008 is about 81851.6402279148. The cubic root of 6699691008 is about 1885.1746498371.

The spelling of 6699691008 in words is "six billion, six hundred ninety-nine million, six hundred ninety-one thousand, eight".