66106049 has 4 divisors (see below), whose sum is σ = 66264240. Its totient is φ = 65947860.

The previous prime is 66106039. The next prime is 66106067. The reversal of 66106049 is 94060166.

66106049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66106049 - 2¹² = 66101953 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66106039) by changing a digit.

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, 78467 + ... + 79304.

It is an arithmetic number, because the mean of its divisors is an integer number (16566060).

Almost surely, 2^66106049 is an apocalyptic number.

It is an amenable number.

66106049 is a deficient number, since it is larger than the sum of its proper divisors (158191).

66106049 is a wasteful number, since it uses less digits than its factorization.

66106049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158190.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 66106049 is about 8130.5626496572. The cubic root of 66106049 is about 404.3403354589.

The spelling of 66106049 in words is "sixty-six million, one hundred six thousand, forty-nine".