2640927667 has 24 divisors (see below), whose sum is σ = 3240723600. Its totient is φ = 2139915456.

The previous prime is 2640927647. The next prime is 2640927683. The reversal of 2640927667 is 7667290462.

It is not a de Polignac number, because 2640927667 - 2¹⁹ = 2640403379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 2640927667.

It is not an unprimeable number, because it can be changed into a prime (2640927647) 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 23 ways as a sum of consecutive naturals, for example, 471093 + ... + 476665.

It is an arithmetic number, because the mean of its divisors is an integer number (135030150).

Almost surely, 2^2640927667 is an apocalyptic number.

2640927667 is a deficient number, since it is larger than the sum of its proper divisors (599795933).

2640927667 is a wasteful number, since it uses less digits than its factorization.

2640927667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6115 (or 6108 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 49.

The square root of 2640927667 is about 51389.9568690226. The cubic root of 2640927667 is about 1382.2465101655.

The spelling of 2640927667 in words is "two billion, six hundred forty million, nine hundred twenty-seven thousand, six hundred sixty-seven".