6658241 has 4 divisors (see below), whose sum is σ = 6674052. Its totient is φ = 6642432.

The previous prime is 6658193. The next prime is 6658243. The reversal of 6658241 is 1428566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1428566 = 2 ⋅714283.

It can be written as a sum of positive squares in 2 ways, for example, as 4393216 + 2265025 = 2096^2 + 1505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6658241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6658198 and 6658207.

It is not an unprimeable number, because it can be changed into a prime (6658243) 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, 7256 + ... + 8121.

It is an arithmetic number, because the mean of its divisors is an integer number (1668513).

Almost surely, 2^6658241 is an apocalyptic number.

It is an amenable number.

6658241 is a deficient number, since it is larger than the sum of its proper divisors (15811).

6658241 is a wasteful number, since it uses less digits than its factorization.

6658241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15810.

The product of its digits is 11520, while the sum is 32.

The square root of 6658241 is about 2580.3567582798. The cubic root of 6658241 is about 188.1278837908.

The spelling of 6658241 in words is "six million, six hundred fifty-eight thousand, two hundred forty-one".