2640755 has 8 divisors (see below), whose sum is σ = 3412752. Its totient is φ = 1950048.

The previous prime is 2640749. The next prime is 2640761. The reversal of 2640755 is 5570462.

2640755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2640749) and next prime (2640761).

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 2640755 - 2⁴ = 2640739 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20249 + ... + 20378.

It is an arithmetic number, because the mean of its divisors is an integer number (426594).

2^2640755 is an apocalyptic number.

2640755 is a deficient number, since it is larger than the sum of its proper divisors (771997).

2640755 is a wasteful number, since it uses less digits than its factorization.

2640755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40645.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 2640755 is about 1625.0399995077. The cubic root of 2640755 is about 138.2216385201.

It can be divided in two parts, 26407 and 55, that added together give a palindrome (26462).

The spelling of 2640755 in words is "two million, six hundred forty thousand, seven hundred fifty-five".