66328735 has 8 divisors (see below), whose sum is σ = 86830416. Its totient is φ = 48239040.

The previous prime is 66328733. The next prime is 66328783. The reversal of 66328735 is 53782366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66328735 - 2¹ = 66328733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66328733) 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, 602934 + ... + 603043.

It is an arithmetic number, because the mean of its divisors is an integer number (10853802).

Almost surely, 2^66328735 is an apocalyptic number.

66328735 is a deficient number, since it is larger than the sum of its proper divisors (20501681).

66328735 is a wasteful number, since it uses less digits than its factorization.

66328735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205993.

The product of its digits is 181440, while the sum is 40.

The square root of 66328735 is about 8144.2455144722. The cubic root of 66328735 is about 404.7938492578.

The spelling of 66328735 in words is "sixty-six million, three hundred twenty-eight thousand, seven hundred thirty-five".