2660783040 has 224 divisors, whose sum is σ = 9420514560. Its totient is φ = 706987008.

The previous prime is 2660783039. The next prime is 2660783107. The reversal of 2660783040 is 403870662.

2660783040 is a `hidden beast` number, since 2 + 6 + 607 + 8 + 3 + 0 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2660782986 and 2660783004.

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, 4725799 + ... + 4726361.

Almost surely, 2^2660783040 is an apocalyptic number.

2660783040 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 2660783040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4710257280).

2660783040 is an abundant number, since it is smaller than the sum of its proper divisors (6759731520).

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

2660783040 is a wasteful number, since it uses less digits than its factorization.

2660783040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136 (or 1120 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 2660783040 is about 51582.7785215182. The cubic root of 2660783040 is about 1385.7019279931.

The spelling of 2660783040 in words is "two billion, six hundred sixty million, seven hundred eighty-three thousand, forty".