6657043 has 4 divisors (see below), whose sum is σ = 6685848. Its totient is φ = 6628240.

The previous prime is 6657041. The next prime is 6657061. The reversal of 6657043 is 3407566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3407566 = 2 ⋅1703783.

It is a cyclic number.

It is not a de Polignac number, because 6657043 - 2¹ = 6657041 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6656996 and 6657014.

It is not an unprimeable number, because it can be changed into a prime (6657041) 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, 14053 + ... + 14518.

It is an arithmetic number, because the mean of its divisors is an integer number (1671462).

Almost surely, 2^6657043 is an apocalyptic number.

6657043 is a deficient number, since it is larger than the sum of its proper divisors (28805).

6657043 is a wasteful number, since it uses less digits than its factorization.

6657043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28804.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 6657043 is about 2580.1246093939. The cubic root of 6657043 is about 188.1165999936.

The spelling of 6657043 in words is "six million, six hundred fifty-seven thousand, forty-three".