6615456 has 48 divisors (see below), whose sum is σ = 17527104. Its totient is φ = 2184704.

The previous prime is 6615449. The next prime is 6615463. The reversal of 6615456 is 6545166.

It is an interprime number because it is at equal distance from previous prime (6615449) and next prime (6615463).

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12901 + ... + 13403.

It is an arithmetic number, because the mean of its divisors is an integer number (365148).

Almost surely, 2^6615456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6615456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8763552).

6615456 is an abundant number, since it is smaller than the sum of its proper divisors (10911648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6615456 is a wasteful number, since it uses less digits than its factorization.

6615456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653 (or 645 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 6615456 is about 2572.0528765949. The cubic root of 6615456 is about 187.7240557104.

The spelling of 6615456 in words is "six million, six hundred fifteen thousand, four hundred fifty-six".