61163805 has 16 divisors (see below), whose sum is σ = 98118144. Its totient is φ = 32535360.

The previous prime is 61163801. The next prime is 61163821. The reversal of 61163805 is 50836116.

61163805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61163805 - 2² = 61163801 is a prime.

It is a super-2 number, since 2×61163805² = 7482022084156050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61163801) 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 15 ways as a sum of consecutive naturals, for example, 820 + ... + 11090.

It is an arithmetic number, because the mean of its divisors is an integer number (6132384).

Almost surely, 2^61163805 is an apocalyptic number.

It is an amenable number.

61163805 is a deficient number, since it is larger than the sum of its proper divisors (36954339).

61163805 is a wasteful number, since it uses less digits than its factorization.

61163805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10676.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 61163805 is about 7820.7291859519. The cubic root of 61163805 is about 394.0017628993.

The spelling of 61163805 in words is "sixty-one million, one hundred sixty-three thousand, eight hundred five".