2666393 has 2 divisors, whose sum is σ = 2666394. Its totient is φ = 2666392.

The previous prime is 2666383. The next prime is 2666423. The reversal of 2666393 is 3936662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1982464 + 683929 = 1408^2 + 827^2 .

It is a cyclic number.

It is not a de Polignac number, because 2666393 - 2¹⁴ = 2650009 is a prime.

It is not a weakly prime, because it can be changed into another prime (2666303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333196 + 1333197.

It is an arithmetic number, because the mean of its divisors is an integer number (1333197).

2^2666393 is an apocalyptic number.

It is an amenable number.

2666393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666393 is an equidigital number, since it uses as much as digits as its factorization.

2666393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 35.

The square root of 2666393 is about 1632.9093667439. The cubic root of 2666393 is about 138.6675109611.

The spelling of 2666393 in words is "two million, six hundred sixty-six thousand, three hundred ninety-three".