2640247753 has 32 divisors (see below), whose sum is σ = 3159902592. Its totient is φ = 2174515200.

The previous prime is 2640247751. The next prime is 2640247769. The reversal of 2640247753 is 3577420462.

It is a happy number.

It is not a de Polignac number, because 2640247753 - 2¹ = 2640247751 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2640247751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1816375 + ... + 1817827.

It is an arithmetic number, because the mean of its divisors is an integer number (98746956).

Almost surely, 2^2640247753 is an apocalyptic number.

It is an amenable number.

2640247753 is a deficient number, since it is larger than the sum of its proper divisors (519654839).

2640247753 is a wasteful number, since it uses less digits than its factorization.

2640247753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705.

The product of its (nonzero) digits is 282240, while the sum is 40.

The square root of 2640247753 is about 51383.3412012103. The cubic root of 2640247753 is about 1382.1278789450.

The spelling of 2640247753 in words is "two billion, six hundred forty million, two hundred forty-seven thousand, seven hundred fifty-three".