105706639 has 2 divisors, whose sum is σ = 105706640. Its totient is φ = 105706638.

The previous prime is 105706613. The next prime is 105706649. The reversal of 105706639 is 936607501.

It is a strong prime.

It is an emirp because it is prime and its reverse (936607501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105706639 - 2⁵ = 105706607 is a prime.

It is a super-2 number, since 2×105706639² = 22347787057352642, which contains 22 as substring.

It is equal to p_6070897 and since 105706639 and 6070897 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 105706598 and 105706607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105706609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52853319 + 52853320.

It is an arithmetic number, because the mean of its divisors is an integer number (52853320).

Almost surely, 2^105706639 is an apocalyptic number.

105706639 is a deficient number, since it is larger than the sum of its proper divisors (1).

105706639 is an equidigital number, since it uses as much as digits as its factorization.

105706639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 105706639 is about 10281.3734004752. The cubic root of 105706639 is about 472.8253522837.

The spelling of 105706639 in words is "one hundred five million, seven hundred six thousand, six hundred thirty-nine".