104660621 has 4 divisors (see below), whose sum is σ = 112711452. Its totient is φ = 96609792.

The previous prime is 104660609. The next prime is 104660641. The reversal of 104660621 is 126066401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 126066401 = 73 ⋅1726937.

It can be written as a sum of positive squares in 2 ways, for example, as 69388900 + 35271721 = 8330^2 + 5939^2 .

It is a cyclic number.

It is not a de Polignac number, because 104660621 - 2¹⁴ = 104644237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104660641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4025396 + ... + 4025421.

It is an arithmetic number, because the mean of its divisors is an integer number (28177863).

Almost surely, 2^104660621 is an apocalyptic number.

It is an amenable number.

104660621 is a deficient number, since it is larger than the sum of its proper divisors (8050831).

104660621 is an equidigital number, since it uses as much as digits as its factorization.

104660621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8050830.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 104660621 is about 10230.3773635189. The cubic root of 104660621 is about 471.2605680730.

The spelling of 104660621 in words is "one hundred four million, six hundred sixty thousand, six hundred twenty-one".