61380105 has 8 divisors (see below), whose sum is σ = 98208192. Its totient is φ = 32736048.

The previous prime is 61380101. The next prime is 61380133. The reversal of 61380105 is 50108316.

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

It is not a de Polignac number, because 61380105 - 2² = 61380101 is a prime.

It is a super-2 number, since 2×61380105² = 7535034579622050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61380101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2045989 + ... + 2046018.

It is an arithmetic number, because the mean of its divisors is an integer number (12276024).

Almost surely, 2^61380105 is an apocalyptic number.

It is an amenable number.

61380105 is a deficient number, since it is larger than the sum of its proper divisors (36828087).

61380105 is a wasteful number, since it uses less digits than its factorization.

61380105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4092015.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 61380105 is about 7834.5456154138. The cubic root of 61380105 is about 394.4656664432.

The spelling of 61380105 in words is "sixty-one million, three hundred eighty thousand, one hundred five".