2666511346 has 4 divisors (see below), whose sum is σ = 3999767022. Its totient is φ = 1333255672.

The previous prime is 2666511311. The next prime is 2666511347. The reversal of 2666511346 is 6431156662.

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., 2279012121 + 387499225 = 47739^2 + 19685^2 .

It is a super-2 number, since 2×2666511346² = 14220565516693463432, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2666511299 and 2666511308.

It is not an unprimeable number, because it can be changed into a prime (2666511347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666627835 + ... + 666627838.

Almost surely, 2^2666511346 is an apocalyptic number.

2666511346 is a deficient number, since it is larger than the sum of its proper divisors (1333255676).

2666511346 is a wasteful number, since it uses less digits than its factorization.

2666511346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333255675.

The product of its digits is 155520, while the sum is 40.

The square root of 2666511346 is about 51638.2740416447. The cubic root of 2666511346 is about 1386.6956248447.

The spelling of 2666511346 in words is "two billion, six hundred sixty-six million, five hundred eleven thousand, three hundred forty-six".