7678932066 has 96 divisors (see below), whose sum is σ = 18947335680. Its totient is φ = 2230675200.

The previous prime is 7678932047. The next prime is 7678932101. The reversal of 7678932066 is 6602398767.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 284505 + ... + 310323.

It is an arithmetic number, because the mean of its divisors is an integer number (197368080).

Almost surely, 2^7678932066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7678932066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9473667840).

7678932066 is an abundant number, since it is smaller than the sum of its proper divisors (11268403614).

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

7678932066 is a wasteful number, since it uses less digits than its factorization.

7678932066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25912 (or 25909 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 54.

The square root of 7678932066 is about 87629.5159521037. The cubic root of 7678932066 is about 1972.8782055125.

The spelling of 7678932066 in words is "seven billion, six hundred seventy-eight million, nine hundred thirty-two thousand, sixty-six".