66166735 has 8 divisors (see below), whose sum is σ = 79461360. Its totient is φ = 52892544.

The previous prime is 66166733. The next prime is 66166739. The reversal of 66166735 is 53766166.

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 66166735 - 2¹ = 66166733 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66166733) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3271 + ... + 11959.

It is an arithmetic number, because the mean of its divisors is an integer number (9932670).

Almost surely, 2^66166735 is an apocalyptic number.

66166735 is a deficient number, since it is larger than the sum of its proper divisors (13294625).

66166735 is a wasteful number, since it uses less digits than its factorization.

66166735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10217.

The product of its digits is 136080, while the sum is 40.

The square root of 66166735 is about 8134.2937615997. The cubic root of 66166735 is about 404.4640270784.

The spelling of 66166735 in words is "sixty-six million, one hundred sixty-six thousand, seven hundred thirty-five".