66748502 has 8 divisors (see below), whose sum is σ = 100443576. Its totient is φ = 33267312.

The previous prime is 66748489. The next prime is 66748531. The reversal of 66748502 is 20584766.

It is a happy number.

66748502 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52688 + ... + 53939.

It is an arithmetic number, because the mean of its divisors is an integer number (12555447).

Almost surely, 2^66748502 is an apocalyptic number.

66748502 is a deficient number, since it is larger than the sum of its proper divisors (33695074).

66748502 is a wasteful number, since it uses less digits than its factorization.

66748502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106942.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 66748502 is about 8169.9756425586. The cubic root of 66748502 is about 405.6459782060.

The spelling of 66748502 in words is "sixty-six million, seven hundred forty-eight thousand, five hundred two".