266691083 has 2 divisors, whose sum is σ = 266691084. Its totient is φ = 266691082.

The previous prime is 266691041. The next prime is 266691097. The reversal of 266691083 is 380196662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266691083 is a prime.

It is a super-2 number, since 2×266691083² = 142248267503425778, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 266691083.

It is not a weakly prime, because it can be changed into another prime (266691013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133345541 + 133345542.

It is an arithmetic number, because the mean of its divisors is an integer number (133345542).

Almost surely, 2^266691083 is an apocalyptic number.

266691083 is a deficient number, since it is larger than the sum of its proper divisors (1).

266691083 is an equidigital number, since it uses as much as digits as its factorization.

266691083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 266691083 is about 16330.6791959183. The cubic root of 266691083 is about 643.6792338964.

The spelling of 266691083 in words is "two hundred sixty-six million, six hundred ninety-one thousand, eighty-three".