2666290901 has 2 divisors, whose sum is σ = 2666290902. Its totient is φ = 2666290900.

The previous prime is 2666290883. The next prime is 2666290927. The reversal of 2666290901 is 1090926662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1425138001 + 1241152900 = 37751^2 + 35230^2 .

It is a cyclic number.

It is not a de Polignac number, because 2666290901 - 2²² = 2662096597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2666290951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333145450 + 1333145451.

It is an arithmetic number, because the mean of its divisors is an integer number (1333145451).

Almost surely, 2^2666290901 is an apocalyptic number.

It is an amenable number.

2666290901 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666290901 is an equidigital number, since it uses as much as digits as its factorization.

2666290901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 2666290901 is about 51636.1394858291. The cubic root of 2666290901 is about 1386.6574103012.

The spelling of 2666290901 in words is "two billion, six hundred sixty-six million, two hundred ninety thousand, nine hundred one".