2566498320 has 240 divisors, whose sum is σ = 8891430912. Its totient is φ = 663029760.

The previous prime is 2566498267. The next prime is 2566498331. The reversal of 2566498320 is 238946652.

2566498320 is a `hidden beast` number, since 2 + 566 + 4 + 9 + 83 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6700849 + ... + 6701231.

Almost surely, 2^2566498320 is an apocalyptic number.

2566498320 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 2566498320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4445715456).

2566498320 is an abundant number, since it is smaller than the sum of its proper divisors (6324932592).

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

2566498320 is a wasteful number, since it uses less digits than its factorization.

2566498320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 661 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 2566498320 is about 50660.6190250376. The cubic root of 2566498320 is about 1369.1372762891.

The spelling of 2566498320 in words is "two billion, five hundred sixty-six million, four hundred ninety-eight thousand, three hundred twenty".