66553063 has 8 divisors (see below), whose sum is σ = 69126656. Its totient is φ = 64006200.

The previous prime is 66553051. The next prime is 66553073. The reversal of 66553063 is 36035566.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 66553063 - 2¹³ = 66544871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66553033) 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 7 ways as a sum of consecutive naturals, for example, 1533 + ... + 11638.

It is an arithmetic number, because the mean of its divisors is an integer number (8640832).

Almost surely, 2^66553063 is an apocalyptic number.

66553063 is a deficient number, since it is larger than the sum of its proper divisors (2573593).

66553063 is a wasteful number, since it uses less digits than its factorization.

66553063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13365.

The product of its (nonzero) digits is 48600, while the sum is 34.

The square root of 66553063 is about 8158.0060676614. The cubic root of 66553063 is about 405.2496819388.

The spelling of 66553063 in words is "sixty-six million, five hundred fifty-three thousand, sixty-three".