61072066 has 8 divisors (see below), whose sum is σ = 99936144. Its totient is φ = 27760020.

The previous prime is 61072043. The next prime is 61072079. The reversal of 61072066 is 66027016.

61072066 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, 1387980 + ... + 1388023.

It is an arithmetic number, because the mean of its divisors is an integer number (12492018).

Almost surely, 2^61072066 is an apocalyptic number.

61072066 is a deficient number, since it is larger than the sum of its proper divisors (38864078).

61072066 is a wasteful number, since it uses less digits than its factorization.

61072066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776016.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 61072066 is about 7814.8618669814. The cubic root of 61072066 is about 393.8046778524.

The spelling of 61072066 in words is "sixty-one million, seventy-two thousand, sixty-six".