105663979 has 2 divisors, whose sum is σ = 105663980. Its totient is φ = 105663978.

The previous prime is 105663977. The next prime is 105664003. The reversal of 105663979 is 979366501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105663979 - 2¹ = 105663977 is a prime.

It is a super-2 number, since 2×105663979² = 22329752916224882, which contains 22 as substring.

Together with 105663977, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (105663977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52831989 + 52831990.

It is an arithmetic number, because the mean of its divisors is an integer number (52831990).

Almost surely, 2^105663979 is an apocalyptic number.

105663979 is a deficient number, since it is larger than the sum of its proper divisors (1).

105663979 is an equidigital number, since it uses as much as digits as its factorization.

105663979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 306180, while the sum is 46.

The square root of 105663979 is about 10279.2985655637. The cubic root of 105663979 is about 472.7617377250.

The spelling of 105663979 in words is "one hundred five million, six hundred sixty-three thousand, nine hundred seventy-nine".