2668167866 has 32 divisors (see below), whose sum is σ = 4928867328. Its totient is φ = 1054892160.

The previous prime is 2668167857. The next prime is 2668167893. The reversal of 2668167866 is 6687618662.

It is a happy number.

It is a super-2 number, since 2×2668167866² = 14238239522309987912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 386606 + ... + 393446.

It is an arithmetic number, because the mean of its divisors is an integer number (154027104).

Almost surely, 2^2668167866 is an apocalyptic number.

2668167866 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2668167866 is a deficient number, since it is larger than the sum of its proper divisors (2260699462).

2668167866 is a wasteful number, since it uses less digits than its factorization.

2668167866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9006.

The product of its digits is 6967296, while the sum is 56.

The square root of 2668167866 is about 51654.3112043903. The cubic root of 2668167866 is about 1386.9827182573.

The spelling of 2668167866 in words is "two billion, six hundred sixty-eight million, one hundred sixty-seven thousand, eight hundred sixty-six".