6660823 has 8 divisors (see below), whose sum is σ = 7485408. Its totient is φ = 5880864.

The previous prime is 6660809. The next prime is 6660859. The reversal of 6660823 is 3280666.

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 6660823 - 2⁵ = 6660791 is a prime.

It is a super-5 number, since 5×6660823⁵ (a number of 35 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660023) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10840 + ... + 11437.

It is an arithmetic number, because the mean of its divisors is an integer number (935676).

Almost surely, 2^6660823 is an apocalyptic number.

6660823 is a deficient number, since it is larger than the sum of its proper divisors (824585).

6660823 is a wasteful number, since it uses less digits than its factorization.

6660823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22313.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 6660823 is about 2580.8570281982. The cubic root of 6660823 is about 188.1521986922.

The spelling of 6660823 in words is "six million, six hundred sixty thousand, eight hundred twenty-three".