61605105 has 8 divisors (see below), whose sum is σ = 98568192. Its totient is φ = 32856048.

The previous prime is 61605101. The next prime is 61605113. The reversal of 61605105 is 50150616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61605105 - 2² = 61605101 is a prime.

It is a super-2 number, since 2×61605105² = 7590377924122050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61605101) 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, 2053489 + ... + 2053518.

It is an arithmetic number, because the mean of its divisors is an integer number (12321024).

Almost surely, 2^61605105 is an apocalyptic number.

It is an amenable number.

61605105 is a deficient number, since it is larger than the sum of its proper divisors (36963087).

61605105 is a wasteful number, since it uses less digits than its factorization.

61605105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4107015.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 61605105 is about 7848.8919600158. The cubic root of 61605105 is about 394.9470740389.

The spelling of 61605105 in words is "sixty-one million, six hundred five thousand, one hundred five".