66909035 has 4 divisors (see below), whose sum is σ = 80290848. Its totient is φ = 53527224.

The previous prime is 66909023. The next prime is 66909091. The reversal of 66909035 is 53090966.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66909035 - 2¹⁶ = 66843499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66909035.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6690899 + ... + 6690908.

It is an arithmetic number, because the mean of its divisors is an integer number (20072712).

Almost surely, 2^66909035 is an apocalyptic number.

66909035 is a deficient number, since it is larger than the sum of its proper divisors (13381813).

66909035 is a wasteful number, since it uses less digits than its factorization.

66909035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13381812.

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 66909035 is about 8179.7943128174. The cubic root of 66909035 is about 405.9709164862.

The spelling of 66909035 in words is "sixty-six million, nine hundred nine thousand, thirty-five".