2668886386 has 4 divisors (see below), whose sum is σ = 4003329582. Its totient is φ = 1334443192.

The previous prime is 2668886347. The next prime is 2668886401. The reversal of 2668886386 is 6836888662.

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

It can be written as a sum of positive squares in only one way, i.e., 2639390625 + 29495761 = 51375^2 + 5431^2 .

It is a super-2 number, since 2×2668886386² = 14245909082752281992, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 667221595 + ... + 667221598.

Almost surely, 2^2668886386 is an apocalyptic number.

2668886386 is a deficient number, since it is larger than the sum of its proper divisors (1334443196).

2668886386 is a wasteful number, since it uses less digits than its factorization.

2668886386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334443195.

The product of its digits is 31850496, while the sum is 61.

The square root of 2668886386 is about 51661.2658187931. The cubic root of 2668886386 is about 1387.1072088477.

The spelling of 2668886386 in words is "two billion, six hundred sixty-eight million, eight hundred eighty-six thousand, three hundred eighty-six".