6618159 has 16 divisors (see below), whose sum is σ = 10122240. Its totient is φ = 4269240.

The previous prime is 6618127. The next prime is 6618169. The reversal of 6618159 is 9518166.

It is not a de Polignac number, because 6618159 - 2⁵ = 6618127 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6618109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3117 + ... + 4790.

It is an arithmetic number, because the mean of its divisors is an integer number (632640).

Almost surely, 2^6618159 is an apocalyptic number.

6618159 is a deficient number, since it is larger than the sum of its proper divisors (3504081).

6618159 is a wasteful number, since it uses less digits than its factorization.

6618159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7947 (or 7941 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 6618159 is about 2572.5782786924. The cubic root of 6618159 is about 187.7496195330.

It can be divided in two parts, 66 and 18159, that added together give a square (18225 = 135²).

The spelling of 6618159 in words is "six million, six hundred eighteen thousand, one hundred fifty-nine".