105674809 has 2 divisors, whose sum is σ = 105674810. Its totient is φ = 105674808.

The previous prime is 105674797. The next prime is 105674819. The reversal of 105674809 is 908476501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103469584 + 2205225 = 10172^2 + 1485^2 .

It is a cyclic number.

It is not a de Polignac number, because 105674809 - 2⁹ = 105674297 is a prime.

It is a super-2 number, since 2×105674809² = 22334330514372962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105674819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52837404 + 52837405.

It is an arithmetic number, because the mean of its divisors is an integer number (52837405).

Almost surely, 2^105674809 is an apocalyptic number.

It is an amenable number.

105674809 is a deficient number, since it is larger than the sum of its proper divisors (1).

105674809 is an equidigital number, since it uses as much as digits as its factorization.

105674809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 105674809 is about 10279.8253389831. The cubic root of 105674809 is about 472.7778890340. Note that the first 3 decimals are identical.

It can be divided in two parts, 10567 and 4809, that added together give a square (15376 = 124²).

The spelling of 105674809 in words is "one hundred five million, six hundred seventy-four thousand, eight hundred nine".