2866580640 has 576 divisors, whose sum is σ = 12363466752. Its totient is φ = 587520000.

The previous prime is 2866580623. The next prime is 2866580669. The reversal of 2866580640 is 460856682.

2866580640 is a `hidden beast` number, since 2 + 8 + 6 + 6 + 580 + 64 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11420515 + ... + 11420765.

It is an arithmetic number, because the mean of its divisors is an integer number (21464352).

Almost surely, 2^2866580640 is an apocalyptic number.

2866580640 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 2866580640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6181733376).

2866580640 is an abundant number, since it is smaller than the sum of its proper divisors (9496886112).

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

2866580640 is a wasteful number, since it uses less digits than its factorization.

2866580640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 2866580640 is about 53540.4579733868. The cubic root of 2866580640 is about 1420.5441014814.

The spelling of 2866580640 in words is "two billion, eight hundred sixty-six million, five hundred eighty thousand, six hundred forty".