61180986 has 8 divisors (see below), whose sum is σ = 122361984. Its totient is φ = 20393660.

The previous prime is 61180957. The next prime is 61180991. The reversal of 61180986 is 68908116.

61180986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

61180986 is an admirable number.

It is a super-2 number, since 2×61180986² = 7486226095864392, which contains 22 as substring.

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, 5098410 + ... + 5098421.

It is an arithmetic number, because the mean of its divisors is an integer number (15295248).

Almost surely, 2^61180986 is an apocalyptic number.

61180986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61180986 is a wasteful number, since it uses less digits than its factorization.

61180986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10196836.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 61180986 is about 7821.8275358128. The cubic root of 61180986 is about 394.0386513311.

The spelling of 61180986 in words is "sixty-one million, one hundred eighty thousand, nine hundred eighty-six".