61542866 has 32 divisors (see below), whose sum is σ = 115972992. Its totient is φ = 23794560.

The previous prime is 61542853. The next prime is 61542913. The reversal of 61542866 is 66824516.

61542866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 19640 + ... + 22556.

It is an arithmetic number, because the mean of its divisors is an integer number (3624156).

Almost surely, 2^61542866 is an apocalyptic number.

61542866 is a deficient number, since it is larger than the sum of its proper divisors (54430126).

61542866 is a wasteful number, since it uses less digits than its factorization.

61542866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3074.

The product of its digits is 69120, while the sum is 38.

The square root of 61542866 is about 7844.9261309460. The cubic root of 61542866 is about 394.8140255759.

The spelling of 61542866 in words is "sixty-one million, five hundred forty-two thousand, eight hundred sixty-six".