7666820676 has 72 divisors (see below), whose sum is σ = 20052032000. Its totient is φ = 2467376640.

The previous prime is 7666820671. The next prime is 7666820729. The reversal of 7666820676 is 6760286667.

It is not an unprimeable number, because it can be changed into a prime (7666820671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 482100 + ... + 497748.

Almost surely, 2^7666820676 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 7666820676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10026016000).

7666820676 is an abundant number, since it is smaller than the sum of its proper divisors (12385211324).

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

7666820676 is a wasteful number, since it uses less digits than its factorization.

7666820676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16129 (or 16124 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The square root of 7666820676 is about 87560.3830279425. The cubic root of 7666820676 is about 1971.8404366146.

It can be divided in two parts, 76668 and 20676, that added together give a square (97344 = 312²).

The spelling of 7666820676 in words is "seven billion, six hundred sixty-six million, eight hundred twenty thousand, six hundred seventy-six".