6658117 has 4 divisors (see below), whose sum is σ = 6663436. Its totient is φ = 6652800.

The previous prime is 6658103. The next prime is 6658121. The reversal of 6658117 is 7118566.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3556996 + 3101121 = 1886^2 + 1761^2 .

It is a cyclic number.

It is not a de Polignac number, because 6658117 - 2¹⁵ = 6625349 is a prime.

It is a Duffinian number.

6658117 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6653117) 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, 367 + ... + 3667.

It is an arithmetic number, because the mean of its divisors is an integer number (1665859).

Almost surely, 2^6658117 is an apocalyptic number.

It is an amenable number.

6658117 is a deficient number, since it is larger than the sum of its proper divisors (5319).

6658117 is a wasteful number, since it uses less digits than its factorization.

6658117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5318.

The product of its digits is 10080, while the sum is 34.

The square root of 6658117 is about 2580.3327304826. The cubic root of 6658117 is about 188.1267159146.

The spelling of 6658117 in words is "six million, six hundred fifty-eight thousand, one hundred seventeen".