66574103 has 4 divisors (see below), whose sum is σ = 66629160. Its totient is φ = 66519048.

The previous prime is 66574097. The next prime is 66574117. The reversal of 66574103 is 30147566.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66574103 - 2¹⁶ = 66508567 is a prime.

It is a super-2 number, since 2×66574103² = 8864222380509218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66574103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66574133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25673 + ... + 28146.

It is an arithmetic number, because the mean of its divisors is an integer number (16657290).

Almost surely, 2^66574103 is an apocalyptic number.

66574103 is a deficient number, since it is larger than the sum of its proper divisors (55057).

66574103 is a wasteful number, since it uses less digits than its factorization.

66574103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55056.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 66574103 is about 8159.2954965487. The cubic root of 66574103 is about 405.2923824776.

The spelling of 66574103 in words is "sixty-six million, five hundred seventy-four thousand, one hundred three".