2666423366 has 4 divisors (see below), whose sum is σ = 3999635052. Its totient is φ = 1333211682.

The previous prime is 2666423363. The next prime is 2666423381. The reversal of 2666423366 is 6633246662.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666423363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666605840 + ... + 666605843.

It is an arithmetic number, because the mean of its divisors is an integer number (999908763).

Almost surely, 2^2666423366 is an apocalyptic number.

2666423366 is a deficient number, since it is larger than the sum of its proper divisors (1333211686).

2666423366 is a wasteful number, since it uses less digits than its factorization.

2666423366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333211685.

The product of its digits is 1119744, while the sum is 44.

The square root of 2666423366 is about 51637.4221471212. The cubic root of 2666423366 is about 1386.6803736035.

The spelling of 2666423366 in words is "two billion, six hundred sixty-six million, four hundred twenty-three thousand, three hundred sixty-six".