6615489 has 16 divisors (see below), whose sum is σ = 9160128. Its totient is φ = 4243392.

The previous prime is 6615487. The next prime is 6615491. The reversal of 6615489 is 9845166.

It is an interprime number because it is at equal distance from previous prime (6615487) and next prime (6615491).

It is not a de Polignac number, because 6615489 - 2¹ = 6615487 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6615487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11599 + ... + 12155.

It is an arithmetic number, because the mean of its divisors is an integer number (572508).

Almost surely, 2^6615489 is an apocalyptic number.

It is an amenable number.

6615489 is a deficient number, since it is larger than the sum of its proper divisors (2544639).

6615489 is a wasteful number, since it uses less digits than its factorization.

6615489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704.

The product of its digits is 51840, while the sum is 39.

The square root of 6615489 is about 2572.0592916961. The cubic root of 6615489 is about 187.7243678524.

It can be divided in two parts, 6 and 615489, that added together give a triangular number (615495 = T₁₁₀₉).

The spelling of 6615489 in words is "six million, six hundred fifteen thousand, four hundred eighty-nine".