66705502 has 16 divisors (see below), whose sum is σ = 103597632. Its totient is φ = 32192640.

The previous prime is 66705491. The next prime is 66705511. The reversal of 66705502 is 20550766.

It is a congruent number.

It is an unprimeable number.

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, 2002 + ... + 11722.

It is an arithmetic number, because the mean of its divisors is an integer number (6474852).

Almost surely, 2^66705502 is an apocalyptic number.

66705502 is a deficient number, since it is larger than the sum of its proper divisors (36892130).

66705502 is a wasteful number, since it uses less digits than its factorization.

66705502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9843.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 66705502 is about 8167.3436318059. The cubic root of 66705502 is about 405.5588525353.

The spelling of 66705502 in words is "sixty-six million, seven hundred five thousand, five hundred two".