6415560 has 96 divisors (see below), whose sum is σ = 21228480. Its totient is φ = 1680000.

The previous prime is 6415529. The next prime is 6415567. The reversal of 6415560 is 655146.

It is a happy number.

It is a super-2 number, since 2×6415560² = 82318820227200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6415567) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25435 + ... + 25685.

It is an arithmetic number, because the mean of its divisors is an integer number (221130).

Almost surely, 2^6415560 is an apocalyptic number.

6415560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6415560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10614240).

6415560 is an abundant number, since it is smaller than the sum of its proper divisors (14812920).

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

6415560 is a wasteful number, since it uses less digits than its factorization.

6415560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 6415560 is about 2532.8955762131. The cubic root of 6415560 is about 185.8138964078.

The spelling of 6415560 in words is "six million, four hundred fifteen thousand, five hundred sixty".