565231680 has 336 divisors, whose sum is σ = 2165689344. Its totient is φ = 134369280.

The previous prime is 565231679. The next prime is 565231753. The reversal of 565231680 is 86132565.

565231680 is a `hidden beast` number, since 56 + 523 + 1 + 6 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1160397 + ... + 1160883.

It is an arithmetic number, because the mean of its divisors is an integer number (6445504).

Almost surely, 2^565231680 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 565231680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1082844672).

565231680 is an abundant number, since it is smaller than the sum of its proper divisors (1600457664).

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

565231680 is a wasteful number, since it uses less digits than its factorization.

565231680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 565231680 is about 23774.6015739486. The cubic root of 565231680 is about 826.8159228707.

The spelling of 565231680 in words is "five hundred sixty-five million, two hundred thirty-one thousand, six hundred eighty".