61427105 has 4 divisors (see below), whose sum is σ = 73712532. Its totient is φ = 49141680.

The previous prime is 61427099. The next prime is 61427111. The reversal of 61427105 is 50172416.

61427105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (61427099) and next prime (61427111).

It can be written as a sum of positive squares in 2 ways, for example, as 43652449 + 17774656 = 6607^2 + 4216^2 .

It is not a de Polignac number, because 61427105 - 2¹⁰ = 61426081 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 6142706 + ... + 6142715.

It is an arithmetic number, because the mean of its divisors is an integer number (18428133).

Almost surely, 2^61427105 is an apocalyptic number.

It is an amenable number.

61427105 is a deficient number, since it is larger than the sum of its proper divisors (12285427).

61427105 is a wasteful number, since it uses less digits than its factorization.

61427105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12285426.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 61427105 is about 7837.5445772257. The cubic root of 61427105 is about 394.5663242281.

The spelling of 61427105 in words is "sixty-one million, four hundred twenty-seven thousand, one hundred five".