2566863040 has 168 divisors, whose sum is σ = 7171822080. Its totient is φ = 872460288.

The previous prime is 2566863017. The next prime is 2566863059. The reversal of 2566863040 is 403686652.

It is a happy number.

2566863040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2566863040² = 13177571732236083200, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 2566862984 and 2566863002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1990716 + ... + 1992004.

Almost surely, 2^2566863040 is an apocalyptic number.

2566863040 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 2566863040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3585911040).

2566863040 is an abundant number, since it is smaller than the sum of its proper divisors (4604959040).

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

2566863040 is a wasteful number, since it uses less digits than its factorization.

2566863040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447 (or 1430 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 2566863040 is about 50664.2185373465. The cubic root of 2566863040 is about 1369.2021283473.

The spelling of 2566863040 in words is "two billion, five hundred sixty-six million, eight hundred sixty-three thousand, forty".