2640767874 has 8 divisors (see below), whose sum is σ = 5281535760. Its totient is φ = 880255956.

The previous prime is 2640767873. The next prime is 2640767939. The reversal of 2640767874 is 4787670462.

It is a happy number.

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

2640767874 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2640767873) 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, 220063984 + ... + 220063995.

It is an arithmetic number, because the mean of its divisors is an integer number (660191970).

Almost surely, 2^2640767874 is an apocalyptic number.

2640767874 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2640767874 is a wasteful number, since it uses less digits than its factorization.

2640767874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440127984.

The product of its (nonzero) digits is 3161088, while the sum is 51.

The square root of 2640767874 is about 51388.4021351122. The cubic root of 2640767874 is about 1382.2186313543.

The spelling of 2640767874 in words is "two billion, six hundred forty million, seven hundred sixty-seven thousand, eight hundred seventy-four".