2666304493 has 2 divisors, whose sum is σ = 2666304494. Its totient is φ = 2666304492.

The previous prime is 2666304427. The next prime is 2666304503. The reversal of 2666304493 is 3944036662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2319674569 + 346629924 = 48163^2 + 18618^2 .

It is a cyclic number.

It is not a de Polignac number, because 2666304493 - 2²⁵ = 2632750061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2666305493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333152246 + 1333152247.

It is an arithmetic number, because the mean of its divisors is an integer number (1333152247).

Almost surely, 2^2666304493 is an apocalyptic number.

It is an amenable number.

2666304493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666304493 is an equidigital number, since it uses as much as digits as its factorization.

2666304493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 43.

The square root of 2666304493 is about 51636.2710989088. The cubic root of 2666304493 is about 1386.6597665602.

The spelling of 2666304493 in words is "two billion, six hundred sixty-six million, three hundred four thousand, four hundred ninety-three".