6418669 has 4 divisors (see below), whose sum is σ = 6527520. Its totient is φ = 6309820.

The previous prime is 6418663. The next prime is 6418693. The reversal of 6418669 is 9668146.

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: 9668146 = 2 ⋅4834073.

It is a cyclic number.

It is not a de Polignac number, because 6418669 - 2¹⁵ = 6385901 is a prime.

It is a super-3 number, since 3×6418669³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (40) 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (6418663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54337 + ... + 54454.

It is an arithmetic number, because the mean of its divisors is an integer number (1631880).

Almost surely, 2^6418669 is an apocalyptic number.

It is an amenable number.

6418669 is a deficient number, since it is larger than the sum of its proper divisors (108851).

6418669 is a wasteful number, since it uses less digits than its factorization.

6418669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108850.

The product of its digits is 62208, while the sum is 40.

The square root of 6418669 is about 2533.5092263499. The cubic root of 6418669 is about 185.8439068881.

The spelling of 6418669 in words is "six million, four hundred eighteen thousand, six hundred sixty-nine".