66803232406 has 8 divisors (see below), whose sum is σ = 100232456544. Its totient is φ = 33392413560.

The previous prime is 66803232383. The next prime is 66803232421. The reversal of 66803232406 is 60423230866.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4592245 + ... + 4606768.

It is an arithmetic number, because the mean of its divisors is an integer number (12529057068).

Almost surely, 2^66803232406 is an apocalyptic number.

66803232406 is a deficient number, since it is larger than the sum of its proper divisors (33429224138).

66803232406 is a wasteful number, since it uses less digits than its factorization.

66803232406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9202646.

The product of its (nonzero) digits is 248832, while the sum is 40.

It can be divided in two parts, 66803 and 232406, that added together give a square (299209 = 547²).

The spelling of 66803232406 in words is "sixty-six billion, eight hundred three million, two hundred thirty-two thousand, four hundred six".