105666287 has 2 divisors, whose sum is σ = 105666288. Its totient is φ = 105666286.

The previous prime is 105666283. The next prime is 105666311. The reversal of 105666287 is 782666501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105666287 - 2² = 105666283 is a prime.

It is a super-2 number, since 2×105666287² = 22330728416732738, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105666283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52833143 + 52833144.

It is an arithmetic number, because the mean of its divisors is an integer number (52833144).

Almost surely, 2^105666287 is an apocalyptic number.

105666287 is a deficient number, since it is larger than the sum of its proper divisors (1).

105666287 is an equidigital number, since it uses as much as digits as its factorization.

105666287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 105666287 is about 10279.4108294201. The cubic root of 105666287 is about 472.7651798509.

The spelling of 105666287 in words is "one hundred five million, six hundred sixty-six thousand, two hundred eighty-seven".