61163066 has 4 divisors (see below), whose sum is σ = 91744602. Its totient is φ = 30581532.

The previous prime is 61163041. The next prime is 61163083. The reversal of 61163066 is 66036116.

61163066 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 can be written as a sum of positive squares in only one way, i.e., 38875225 + 22287841 = 6235^2 + 4721^2 .

It is a Curzon 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 as a sum of consecutive naturals, namely, 15290765 + ... + 15290768.

Almost surely, 2^61163066 is an apocalyptic number.

61163066 is a deficient number, since it is larger than the sum of its proper divisors (30581536).

61163066 is a wasteful number, since it uses less digits than its factorization.

61163066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30581535.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 61163066 is about 7820.6819395753. The cubic root of 61163066 is about 394.0001760759. Note that the first 3 decimals are identical.

The spelling of 61163066 in words is "sixty-one million, one hundred sixty-three thousand, sixty-six".