61108409 has 8 divisors (see below), whose sum is σ = 64619520. Its totient is φ = 57693600.

The previous prime is 61108403. The next prime is 61108429. The reversal of 61108409 is 90480116.

61108409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61108409 - 2¹⁶ = 61042873 is a prime.

It is a super-2 number, since 2×61108409² = 7468475301022562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61108403) 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 7 ways as a sum of consecutive naturals, for example, 22769 + ... + 25310.

It is an arithmetic number, because the mean of its divisors is an integer number (8077440).

Almost surely, 2^61108409 is an apocalyptic number.

It is an amenable number.

61108409 is a deficient number, since it is larger than the sum of its proper divisors (3511111).

61108409 is a wasteful number, since it uses less digits than its factorization.

61108409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48151.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 61108409 is about 7817.1867701879. The cubic root of 61108409 is about 393.8827779633.

The spelling of 61108409 in words is "sixty-one million, one hundred eight thousand, four hundred nine".