6666653 has 4 divisors (see below), whose sum is σ = 7619040. Its totient is φ = 5714268.

The previous prime is 6666617. The next prime is 6666679. The reversal of 6666653 is 3566666.

6666653 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3566666 = 2 ⋅1783333.

It is not a de Polignac number, because 6666653 - 2⁶ = 6666589 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476183 + ... + 476196.

It is an arithmetic number, because the mean of its divisors is an integer number (1904760).

Almost surely, 2^6666653 is an apocalyptic number.

It is an amenable number.

6666653 is a deficient number, since it is larger than the sum of its proper divisors (952387).

6666653 is an equidigital number, since it uses as much as digits as its factorization.

6666653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952386.

The product of its digits is 116640, while the sum is 38.

The square root of 6666653 is about 2581.9862509316. The cubic root of 6666653 is about 188.2070771679.

The spelling of 6666653 in words is "six million, six hundred sixty-six thousand, six hundred fifty-three".