66602723 has 8 divisors (see below), whose sum is σ = 72822000. Its totient is φ = 60410880.

The previous prime is 66602717. The next prime is 66602747. The reversal of 66602723 is 32720666.

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 66602723 - 2⁴ = 66602707 is a prime.

It is a super-3 number, since 3×66602723³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 66602723.

It is not an unprimeable number, because it can be changed into a prime (66602323) 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, 1598 + ... + 11651.

It is an arithmetic number, because the mean of its divisors is an integer number (9102750).

Almost surely, 2^66602723 is an apocalyptic number.

66602723 is a deficient number, since it is larger than the sum of its proper divisors (6219277).

66602723 is a wasteful number, since it uses less digits than its factorization.

66602723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13717.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 66602723 is about 8161.0491359874. The cubic root of 66602723 is about 405.3504521357.

The spelling of 66602723 in words is "sixty-six million, six hundred two thousand, seven hundred twenty-three".