2640203676 has 36 divisors (see below), whose sum is σ = 7280562744. Its totient is φ = 800061600.

The previous prime is 2640203663. The next prime is 2640203677. The reversal of 2640203676 is 6763020462.

It is a happy number.

2640203676 is a `hidden beast` number, since 2 + 640 + 2 + 0 + 3 + 6 + 7 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2640203676.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640203677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3333195 + ... + 3333986.

It is an arithmetic number, because the mean of its divisors is an integer number (202237854).

Almost surely, 2^2640203676 is an apocalyptic number.

It is an amenable number.

2640203676 is an abundant number, since it is smaller than the sum of its proper divisors (4640359068).

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

2640203676 is a wasteful number, since it uses less digits than its factorization.

2640203676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6667202 (or 6667197 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 2640203676 is about 51382.9122958207. The cubic root of 2640203676 is about 1382.1201876984.

The spelling of 2640203676 in words is "two billion, six hundred forty million, two hundred three thousand, six hundred seventy-six".