2666312794 has 4 divisors (see below), whose sum is σ = 3999469194. Its totient is φ = 1333156396.

The previous prime is 2666312791. The next prime is 2666312797. The reversal of 2666312794 is 4972136662.

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

It is an interprime number because it is at equal distance from previous prime (2666312791) and next prime (2666312797).

It can be written as a sum of positive squares in only one way, i.e., 2339173225 + 327139569 = 48365^2 + 18087^2 .

It is not an unprimeable number, because it can be changed into a prime (2666312791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666578197 + ... + 666578200.

Almost surely, 2^2666312794 is an apocalyptic number.

2666312794 is a deficient number, since it is larger than the sum of its proper divisors (1333156400).

2666312794 is a wasteful number, since it uses less digits than its factorization.

2666312794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333156399.

The product of its digits is 653184, while the sum is 46.

The square root of 2666312794 is about 51636.3514783917. The cubic root of 2666312794 is about 1386.6612055870.

The spelling of 2666312794 in words is "two billion, six hundred sixty-six million, three hundred twelve thousand, seven hundred ninety-four".