104127661 has 16 divisors (see below), whose sum is σ = 118195200. Its totient is φ = 90865600.

The previous prime is 104127649. The next prime is 104127679. The reversal of 104127661 is 166721401.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104127661 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 (104127631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60075 + ... + 61783.

It is an arithmetic number, because the mean of its divisors is an integer number (7387200).

Almost surely, 2^104127661 is an apocalyptic number.

104127661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

104127661 is the 4564-th centered decagonal number.

It is an amenable number.

104127661 is a deficient number, since it is larger than the sum of its proper divisors (14067539).

104127661 is a wasteful number, since it uses less digits than its factorization.

104127661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940.

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

The square root of 104127661 is about 10204.2962030705. The cubic root of 104127661 is about 470.4592779283.

It can be divided in two parts, 104 and 127661, that added together give a triangular number (127765 = T₅₀₅).

The spelling of 104127661 in words is "one hundred four million, one hundred twenty-seven thousand, six hundred sixty-one".