106665539 has 2 divisors, whose sum is σ = 106665540. Its totient is φ = 106665538.

The previous prime is 106665511. The next prime is 106665551. The reversal of 106665539 is 935566601.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106665539 is a prime.

It is a super-2 number, since 2×106665539² = 22755074420321042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 106665496 and 106665505.

It is not a weakly prime, because it can be changed into another prime (106665589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53332769 + 53332770.

It is an arithmetic number, because the mean of its divisors is an integer number (53332770).

Almost surely, 2^106665539 is an apocalyptic number.

106665539 is a deficient number, since it is larger than the sum of its proper divisors (1).

106665539 is an equidigital number, since it uses as much as digits as its factorization.

106665539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145800, while the sum is 41.

The square root of 106665539 is about 10327.9009968144. The cubic root of 106665539 is about 474.2507693469.

The spelling of 106665539 in words is "one hundred six million, six hundred sixty-five thousand, five hundred thirty-nine".