6415475660 has 72 divisors (see below), whose sum is σ = 14829042480. Its totient is φ = 2329683840.

The previous prime is 6415475659. The next prime is 6415475669. The reversal of 6415475660 is 665745146.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (6415475669) 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, 2411411 + ... + 2414069.

Almost surely, 2^6415475660 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 6415475660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7414521240).

6415475660 is an abundant number, since it is smaller than the sum of its proper divisors (8413566820).

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

6415475660 is a wasteful number, since it uses less digits than its factorization.

6415475660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3687 (or 3674 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 44.

The square root of 6415475660 is about 80096.6644748706. The cubic root of 6415475660 is about 1858.1308215758.

The spelling of 6415475660 in words is "six billion, four hundred fifteen million, four hundred seventy-five thousand, six hundred sixty".