7866164688 has 80 divisors (see below), whose sum is σ = 21041129472. Its totient is φ = 2529648000.

The previous prime is 7866164671. The next prime is 7866164689. The reversal of 7866164688 is 8864616687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7866164689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 484543 + ... + 500513.

Almost surely, 2^7866164688 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 7866164688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10520564736).

7866164688 is an abundant number, since it is smaller than the sum of its proper divisors (13174964784).

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

7866164688 is a wasteful number, since it uses less digits than its factorization.

7866164688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16344 (or 16338 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 60.

The square root of 7866164688 is about 88691.4014321569. The cubic root of 7866164688 is about 1988.7842787023.

The spelling of 7866164688 in words is "seven billion, eight hundred sixty-six million, one hundred sixty-four thousand, six hundred eighty-eight".