66563007 has 16 divisors (see below), whose sum is σ = 107396352. Its totient is φ = 35798400.

The previous prime is 66562987. The next prime is 66563009. The reversal of 66563007 is 70036566.

It is not a de Polignac number, because 66563007 - 2⁷ = 66562879 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 92869 + ... + 93582.

It is an arithmetic number, because the mean of its divisors is an integer number (6712272).

Almost surely, 2^66563007 is an apocalyptic number.

66563007 is a deficient number, since it is larger than the sum of its proper divisors (40833345).

66563007 is a wasteful number, since it uses less digits than its factorization.

66563007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186478.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 66563007 is about 8158.6155075478. The cubic root of 66563007 is about 405.2698643415.

The spelling of 66563007 in words is "sixty-six million, five hundred sixty-three thousand, seven".