2668778597 has 8 divisors (see below), whose sum is σ = 2705161536. Its totient is φ = 2632496512.

The previous prime is 2668778543. The next prime is 2668778611. The reversal of 2668778597 is 7958778662.

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 2668778597 - 2¹⁸ = 2668516453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668778197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28853 + ... + 78549.

It is an arithmetic number, because the mean of its divisors is an integer number (338145192).

Almost surely, 2^2668778597 is an apocalyptic number.

It is an amenable number.

2668778597 is a deficient number, since it is larger than the sum of its proper divisors (36382939).

2668778597 is an equidigital number, since it uses as much as digits as its factorization.

2668778597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50427.

The product of its digits is 71124480, while the sum is 65.

The square root of 2668778597 is about 51660.2225798534. Note that the first 3 decimals coincide. The cubic root of 2668778597 is about 1387.0885347779.

Adding to 2668778597 its sum of digits (65), we get a palindrome (2668778662).

The spelling of 2668778597 in words is "two billion, six hundred sixty-eight million, seven hundred seventy-eight thousand, five hundred ninety-seven".