2640055585 has 8 divisors (see below), whose sum is σ = 3211465320. Its totient is φ = 2083112064.

The previous prime is 2640055547. The next prime is 2640055597. The reversal of 2640055585 is 5855500462.

It can be written as a sum of positive squares in 4 ways, for example, as 1281424 + 2638774161 = 1132^2 + 51369^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2640055585 - 2¹⁷ = 2639924513 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3616150 + ... + 3616879.

It is an arithmetic number, because the mean of its divisors is an integer number (401433165).

Almost surely, 2^2640055585 is an apocalyptic number.

It is an amenable number.

2640055585 is a deficient number, since it is larger than the sum of its proper divisors (571409735).

2640055585 is an equidigital number, since it uses as much as digits as its factorization.

2640055585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7233107.

The product of its (nonzero) digits is 240000, while the sum is 40.

The square root of 2640055585 is about 51381.4712226110. The cubic root of 2640055585 is about 1382.0943458300.

The spelling of 2640055585 in words is "two billion, six hundred forty million, fifty-five thousand, five hundred eighty-five".