104172661 has 8 divisors (see below), whose sum is σ = 104867000. Its totient is φ = 103481280.

The previous prime is 104172659. The next prime is 104172697. The reversal of 104172661 is 166271401.

It can be written as a sum of positive squares in 4 ways, for example, as 255025 + 103917636 = 505^2 + 10194^2 .

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 104172661 - 2¹ = 104172659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104172361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146575 + ... + 147283.

It is an arithmetic number, because the mean of its divisors is an integer number (13108375).

Almost surely, 2^104172661 is an apocalyptic number.

It is an amenable number.

104172661 is a deficient number, since it is larger than the sum of its proper divisors (694339).

104172661 is an equidigital number, since it uses as much as digits as its factorization.

104172661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 104172661 is about 10206.5009185323. The cubic root of 104172661 is about 470.5270396812.

The spelling of 104172661 in words is "one hundred four million, one hundred seventy-two thousand, six hundred sixty-one".