2666304893 has 4 divisors (see below), whose sum is σ = 3047205600. Its totient is φ = 2285404188.

The previous prime is 2666304881. The next prime is 2666304911. The reversal of 2666304893 is 3984036662.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3984036662 = 2 ⋅1992018331.

It is a cyclic number.

It is not a de Polignac number, because 2666304893 - 2¹⁴ = 2666288509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666304493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190450343 + ... + 190450356.

It is an arithmetic number, because the mean of its divisors is an integer number (761801400).

Almost surely, 2^2666304893 is an apocalyptic number.

It is an amenable number.

2666304893 is a deficient number, since it is larger than the sum of its proper divisors (380900707).

2666304893 is an equidigital number, since it uses as much as digits as its factorization.

2666304893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380900706.

The product of its (nonzero) digits is 1119744, while the sum is 47.

The square root of 2666304893 is about 51636.2749721550. The cubic root of 2666304893 is about 1386.6598359026.

The spelling of 2666304893 in words is "two billion, six hundred sixty-six million, three hundred four thousand, eight hundred ninety-three".