66852823 has 8 divisors (see below), whose sum is σ = 70860960. Its totient is φ = 62853120.

The previous prime is 66852817. The next prime is 66852869. The reversal of 66852823 is 32825866.

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 66852823 - 2⁵ = 66852791 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 (66852883) 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, 22558 + ... + 25348.

It is an arithmetic number, because the mean of its divisors is an integer number (8857620).

Almost surely, 2^66852823 is an apocalyptic number.

66852823 is a deficient number, since it is larger than the sum of its proper divisors (4008137).

66852823 is a wasteful number, since it uses less digits than its factorization.

66852823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4217.

The product of its digits is 138240, while the sum is 40.

The square root of 66852823 is about 8176.3575631206. The cubic root of 66852823 is about 405.8571957667.

The spelling of 66852823 in words is "sixty-six million, eight hundred fifty-two thousand, eight hundred twenty-three".