2564240760 has 192 divisors, whose sum is σ = 9022384800. Its totient is φ = 647709696.

The previous prime is 2564240743. The next prime is 2564240797. The reversal of 2564240760 is 670424652.

2564240760 is a `hidden beast` number, since 2 + 5 + 642 + 4 + 0 + 7 + 6 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 386592 + ... + 393168.

Almost surely, 2^2564240760 is an apocalyptic number.

2564240760 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 2564240760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4511192400).

2564240760 is an abundant number, since it is smaller than the sum of its proper divisors (6458144040).

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

2564240760 is a wasteful number, since it uses less digits than its factorization.

2564240760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6635 (or 6606 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 2564240760 is about 50638.3329109480. The cubic root of 2564240760 is about 1368.7357153698.

The spelling of 2564240760 in words is "two billion, five hundred sixty-four million, two hundred forty thousand, seven hundred sixty".