61471866 has 8 divisors (see below), whose sum is σ = 122943744. Its totient is φ = 20490620.

The previous prime is 61471831. The next prime is 61471873. The reversal of 61471866 is 66817416.

It is a happy number.

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

61471866 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5122650 + ... + 5122661.

It is an arithmetic number, because the mean of its divisors is an integer number (15367968).

Almost surely, 2^61471866 is an apocalyptic number.

61471866 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.

61471866 is a wasteful number, since it uses less digits than its factorization.

61471866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10245316.

The product of its digits is 48384, while the sum is 39.

The square root of 61471866 is about 7840.3996071629. The cubic root of 61471866 is about 394.6621391248.

The spelling of 61471866 in words is "sixty-one million, four hundred seventy-one thousand, eight hundred sixty-six".