2668421667 has 16 divisors (see below), whose sum is σ = 3579719040. Its totient is φ = 1768054272.

The previous prime is 2668421603. The next prime is 2668421669. The reversal of 2668421667 is 7661248662.

It is not a de Polignac number, because 2668421667 - 2⁶ = 2668421603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2668421669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1033384 + ... + 1035962.

It is an arithmetic number, because the mean of its divisors is an integer number (223732440).

Almost surely, 2^2668421667 is an apocalyptic number.

2668421667 is a deficient number, since it is larger than the sum of its proper divisors (911297373).

2668421667 is a wasteful number, since it uses less digits than its factorization.

2668421667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4562.

The product of its digits is 1161216, while the sum is 48.

The square root of 2668421667 is about 51656.7678721772. The cubic root of 2668421667 is about 1387.0266943060.

The spelling of 2668421667 in words is "two billion, six hundred sixty-eight million, four hundred twenty-one thousand, six hundred sixty-seven".