61066818 has 32 divisors (see below), whose sum is σ = 138597120. Its totient is φ = 19921680.

The previous prime is 61066799. The next prime is 61066847. The reversal of 61066818 is 81866016.

61066818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 in 15 ways as a sum of consecutive naturals, for example, 9493 + ... + 14568.

It is an arithmetic number, because the mean of its divisors is an integer number (4331160).

Almost surely, 2^61066818 is an apocalyptic number.

61066818 is an abundant number, since it is smaller than the sum of its proper divisors (77530302).

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

61066818 is a wasteful number, since it uses less digits than its factorization.

61066818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24119 (or 24113 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 61066818 is about 7814.5260892776. The cubic root of 61066818 is about 393.7933974843.

The spelling of 61066818 in words is "sixty-one million, sixty-six thousand, eight hundred eighteen".