2640565006 has 8 divisors (see below), whose sum is σ = 4019964840. Its totient is φ = 1300576728.

The previous prime is 2640564991. The next prime is 2640565009. The reversal of 2640565006 is 6005650462.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640565009) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9852721 + ... + 9852988.

It is an arithmetic number, because the mean of its divisors is an integer number (502495605).

Almost surely, 2^2640565006 is an apocalyptic number.

2640565006 is a deficient number, since it is larger than the sum of its proper divisors (1379399834).

2640565006 is a wasteful number, since it uses less digits than its factorization.

2640565006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19705778.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 2640565006 is about 51386.4282276945. The cubic root of 2640565006 is about 1382.1832357013.

The spelling of 2640565006 in words is "two billion, six hundred forty million, five hundred sixty-five thousand, six".