2668886387 has 4 divisors (see below), whose sum is σ = 2677580136. Its totient is φ = 2660192640.

The previous prime is 2668886347. The next prime is 2668886401. The reversal of 2668886387 is 7836888662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2668886387 - 2¹⁶ = 2668820851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2668886347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4346414 + ... + 4347027.

It is an arithmetic number, because the mean of its divisors is an integer number (669395034).

Almost surely, 2^2668886387 is an apocalyptic number.

2668886387 is a deficient number, since it is larger than the sum of its proper divisors (8693749).

2668886387 is an equidigital number, since it uses as much as digits as its factorization.

2668886387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8693748.

The product of its digits is 37158912, while the sum is 62.

The square root of 2668886387 is about 51661.2658284715. The cubic root of 2668886387 is about 1387.1072090210.

The spelling of 2668886387 in words is "two billion, six hundred sixty-eight million, eight hundred eighty-six thousand, three hundred eighty-seven".