6660493 has 8 divisors (see below), whose sum is σ = 7698240. Its totient is φ = 5644320.

The previous prime is 6660473. The next prime is 6660499. The reversal of 6660493 is 3940666.

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 6660493 - 2¹³ = 6652301 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 (6660499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4723 + ... + 5968.

It is an arithmetic number, because the mean of its divisors is an integer number (962280).

Almost surely, 2^6660493 is an apocalyptic number.

It is an amenable number.

6660493 is a deficient number, since it is larger than the sum of its proper divisors (1037747).

6660493 is a wasteful number, since it uses less digits than its factorization.

6660493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10787.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 6660493 is about 2580.7930951551. The cubic root of 6660493 is about 188.1490914059.

The spelling of 6660493 in words is "six million, six hundred sixty thousand, four hundred ninety-three".