6656450240 has 112 divisors (see below), whose sum is σ = 18043672320. Its totient is φ = 2315258880.

The previous prime is 6656450239. The next prime is 6656450279. The reversal of 6656450240 is 420546566.

It is a junction number, because it is equal to n+sod(n) for n = 6656450194 and 6656450203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39851 + ... + 122069.

Almost surely, 2^6656450240 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 6656450240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9021836160).

6656450240 is an abundant number, since it is smaller than the sum of its proper divisors (11387222080).

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

6656450240 is a wasteful number, since it uses less digits than its factorization.

6656450240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82270 (or 82260 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The square root of 6656450240 is about 81587.0715248439. The cubic root of 6656450240 is about 1881.1101636806.

The spelling of 6656450240 in words is "six billion, six hundred fifty-six million, four hundred fifty thousand, two hundred forty".