6618149 has 4 divisors (see below), whose sum is σ = 6646080. Its totient is φ = 6590220.

The previous prime is 6618127. The next prime is 6618169. The reversal of 6618149 is 9418166.

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.

It is a cyclic number.

It is not a de Polignac number, because 6618149 - 2⁸ = 6617893 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

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 3 ways as a sum of consecutive naturals, for example, 13607 + ... + 14084.

It is an arithmetic number, because the mean of its divisors is an integer number (1661520).

Almost surely, 2^6618149 is an apocalyptic number.

It is an amenable number.

6618149 is a deficient number, since it is larger than the sum of its proper divisors (27931).

6618149 is a wasteful number, since it uses less digits than its factorization.

6618149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27930.

The product of its digits is 10368, while the sum is 35.

The square root of 6618149 is about 2572.5763351162. The cubic root of 6618149 is about 187.7495249701.

The spelling of 6618149 in words is "six million, six hundred eighteen thousand, one hundred forty-nine".