7665066756 has 72 divisors (see below), whose sum is σ = 20248772544. Its totient is φ = 2440215360.

The previous prime is 7665066679. The next prime is 7665066757. The reversal of 7665066756 is 6576605667.

7665066756 is a `hidden beast` number, since 7 + 66 + 506 + 6 + 75 + 6 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (7665066757) 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, 565450 + ... + 578846.

It is an arithmetic number, because the mean of its divisors is an integer number (281232952).

Almost surely, 2^7665066756 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 7665066756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10124386272).

7665066756 is an abundant number, since it is smaller than the sum of its proper divisors (12583705788).

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

7665066756 is a wasteful number, since it uses less digits than its factorization.

7665066756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14121 (or 14116 counting only the distinct ones).

The product of its (nonzero) digits is 9525600, while the sum is 54.

The square root of 7665066756 is about 87550.3669666781. The cubic root of 7665066756 is about 1971.6900607598.

The spelling of 7665066756 in words is "seven billion, six hundred sixty-five million, sixty-six thousand, seven hundred fifty-six".