66550534 has 8 divisors (see below), whose sum is σ = 103268160. Its totient is φ = 32127816.

The previous prime is 66550513. The next prime is 66550537. The reversal of 66550534 is 43505566.

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

It is a self number, because there is not a number n which added to its sum of digits gives 66550534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66550537) by changing a digit.

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, 573654 + ... + 573769.

It is an arithmetic number, because the mean of its divisors is an integer number (12908520).

Almost surely, 2^66550534 is an apocalyptic number.

66550534 is a deficient number, since it is larger than the sum of its proper divisors (36717626).

66550534 is a wasteful number, since it uses less digits than its factorization.

66550534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147454.

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 66550534 is about 8157.8510650784. The cubic root of 66550534 is about 405.2445487444.

The spelling of 66550534 in words is "sixty-six million, five hundred fifty thousand, five hundred thirty-four".