106505999 has 2 divisors, whose sum is σ = 106506000. Its totient is φ = 106505998.

The previous prime is 106505957. The next prime is 106506053. The reversal of 106505999 is 999505601.

It is a weak prime.

It is an emirp because it is prime and its reverse (999505601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 106505999 - 2²⁰ = 105457423 is a prime.

It is a super-2 number, since 2×106505999² = 22687055645976002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106505929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53252999 + 53253000.

It is an arithmetic number, because the mean of its divisors is an integer number (53253000).

Almost surely, 2^106505999 is an apocalyptic number.

106505999 is a deficient number, since it is larger than the sum of its proper divisors (1).

106505999 is an equidigital number, since it uses as much as digits as its factorization.

106505999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 109350, while the sum is 44.

The square root of 106505999 is about 10320.1743686820. The cubic root of 106505999 is about 474.0142052156.

The spelling of 106505999 in words is "one hundred six million, five hundred five thousand, nine hundred ninety-nine".