2785666000 has 160 divisors (see below), whose sum is σ = 7637011200. Its totient is φ = 974246400.

The previous prime is 2785665991. The next prime is 2785666031. The reversal of 2785666000 is 6665872.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 491181 + ... + 496819.

It is an arithmetic number, because the mean of its divisors is an integer number (47731320).

Almost surely, 2^2785666000 is an apocalyptic number.

2785666000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2785666000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3818505600).

2785666000 is an abundant number, since it is smaller than the sum of its proper divisors (4851345200).

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

2785666000 is a wasteful number, since it uses less digits than its factorization.

2785666000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5694 (or 5678 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 2785666000 is about 52779.4088636847. The cubic root of 2785666000 is about 1407.0504881152.

The spelling of 2785666000 in words is "two billion, seven hundred eighty-five million, six hundred sixty-six thousand".