103664065 has 4 divisors (see below), whose sum is σ = 124396884. Its totient is φ = 82931248.

The previous prime is 103664039. The next prime is 103664069. The reversal of 103664065 is 560466301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560466301 = 809 ⋅692789.

It can be written as a sum of positive squares in 2 ways, for example, as 41679936 + 61984129 = 6456^2 + 7873^2 .

It is a cyclic number.

It is not a de Polignac number, because 103664065 - 2¹¹ = 103662017 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (103664069) 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 in 3 ways as a sum of consecutive naturals, for example, 10366402 + ... + 10366411.

It is an arithmetic number, because the mean of its divisors is an integer number (31099221).

Almost surely, 2^103664065 is an apocalyptic number.

It is an amenable number.

103664065 is a deficient number, since it is larger than the sum of its proper divisors (20732819).

103664065 is an equidigital number, since it uses as much as digits as its factorization.

103664065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20732818.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 103664065 is about 10181.5551366184. Note that the first 3 decimals coincide. The cubic root of 103664065 is about 469.7600480313.

The spelling of 103664065 in words is "one hundred three million, six hundred sixty-four thousand, sixty-five".