103861805 has 8 divisors (see below), whose sum is σ = 125179800. Its totient is φ = 82725696.

The previous prime is 103861799. The next prime is 103861817. The reversal of 103861805 is 508168301.

It can be written as a sum of positive squares in 4 ways, for example, as 54257956 + 49603849 = 7366^2 + 7043^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 103861805 - 2²⁶ = 36752941 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 44210 + ... + 46499.

It is an arithmetic number, because the mean of its divisors is an integer number (15647475).

Almost surely, 2^103861805 is an apocalyptic number.

It is an amenable number.

103861805 is a deficient number, since it is larger than the sum of its proper divisors (21317995).

103861805 is an equidigital number, since it uses as much as digits as its factorization.

103861805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90943.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 103861805 is about 10191.2612075248. The cubic root of 103861805 is about 470.0585486139.

The spelling of 103861805 in words is "one hundred three million, eight hundred sixty-one thousand, eight hundred five".