61580066 has 8 divisors (see below), whose sum is σ = 92533584. Its totient is φ = 30735540.

The previous prime is 61580059. The next prime is 61580111. The reversal of 61580066 is 66008516.

61580066 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.

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, 25820 + ... + 28103.

It is an arithmetic number, because the mean of its divisors is an integer number (11566698).

Almost surely, 2^61580066 is an apocalyptic number.

61580066 is a deficient number, since it is larger than the sum of its proper divisors (30953518).

61580066 is a wasteful number, since it uses less digits than its factorization.

61580066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54496.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 61580066 is about 7847.2967319963. The cubic root of 61580066 is about 394.8935588859.

The spelling of 61580066 in words is "sixty-one million, five hundred eighty thousand, sixty-six".