6766077816 has 96 divisors (see below), whose sum is σ = 18856197360. Its totient is φ = 2190191616.

The previous prime is 6766077803. The next prime is 6766077847. The reversal of 6766077816 is 6187706676.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1577611 + ... + 1581893.

Almost surely, 2^6766077816 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 6766077816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9428098680).

6766077816 is an abundant number, since it is smaller than the sum of its proper divisors (12090119544).

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

6766077816 is a wasteful number, since it uses less digits than its factorization.

6766077816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4925 (or 4918 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The square root of 6766077816 is about 82256.1719021740. The cubic root of 6766077816 is about 1891.3808872027.

The spelling of 6766077816 in words is "six billion, seven hundred sixty-six million, seventy-seven thousand, eight hundred sixteen".