7866803660 has 144 divisors (see below), whose sum is σ = 17866850400. Its totient is φ = 2906956800.

The previous prime is 7866803657. The next prime is 7866803683. The reversal of 7866803660 is 663086687.

It is a junction number, because it is equal to n+sod(n) for n = 7866803599 and 7866803608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52797266 + ... + 52797414.

It is an arithmetic number, because the mean of its divisors is an integer number (124075350).

Almost surely, 2^7866803660 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 7866803660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8933425200).

7866803660 is an abundant number, since it is smaller than the sum of its proper divisors (10000046740).

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

7866803660 is a wasteful number, since it uses less digits than its factorization.

7866803660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 50.

The square root of 7866803660 is about 88695.0035796831. The cubic root of 7866803660 is about 1988.8381271833.

The spelling of 7866803660 in words is "seven billion, eight hundred sixty-six million, eight hundred three thousand, six hundred sixty".