66563006 has 16 divisors (see below), whose sum is σ = 101869584. Its totient is φ = 32612544.

The previous prime is 66562987. The next prime is 66563009. The reversal of 66563006 is 60036566.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66563009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22400 + ... + 25196.

It is an arithmetic number, because the mean of its divisors is an integer number (6366849).

Almost surely, 2^66563006 is an apocalyptic number.

66563006 is a deficient number, since it is larger than the sum of its proper divisors (35306578).

66563006 is a wasteful number, since it uses less digits than its factorization.

66563006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3035.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 66563006 is about 8158.6154462629. The cubic root of 66563006 is about 405.2698623120.

The spelling of 66563006 in words is "sixty-six million, five hundred sixty-three thousand, six".