2665940682 has 8 divisors (see below), whose sum is σ = 5331881376. Its totient is φ = 888646892.

The previous prime is 2665940671. The next prime is 2665940689. The reversal of 2665940682 is 2860495662.

It is a happy number.

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

2665940682 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2665940689) 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, 222161718 + ... + 222161729.

It is an arithmetic number, because the mean of its divisors is an integer number (666485172).

Almost surely, 2^2665940682 is an apocalyptic number.

2665940682 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.

2665940682 is a wasteful number, since it uses less digits than its factorization.

2665940682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444323452.

The product of its (nonzero) digits is 1244160, while the sum is 48.

The square root of 2665940682 is about 51632.7481546353. The cubic root of 2665940682 is about 1386.5966948662.

The spelling of 2665940682 in words is "two billion, six hundred sixty-five million, nine hundred forty thousand, six hundred eighty-two".