2666394968 has 32 divisors (see below), whose sum is σ = 5222914560. Its totient is φ = 1273752480.

The previous prime is 2666394961. The next prime is 2666395013. The reversal of 2666394968 is 8694936662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666394961) 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, 159671 + ... + 175577.

It is an arithmetic number, because the mean of its divisors is an integer number (163216080).

Almost surely, 2^2666394968 is an apocalyptic number.

It is an amenable number.

2666394968 is a deficient number, since it is larger than the sum of its proper divisors (2556519592).

2666394968 is a wasteful number, since it uses less digits than its factorization.

2666394968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16847 (or 16843 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 59.

The square root of 2666394968 is about 51637.1471713920. The cubic root of 2666394968 is about 1386.6754507682.

The spelling of 2666394968 in words is "two billion, six hundred sixty-six million, three hundred ninety-four thousand, nine hundred sixty-eight".