565667980 has 96 divisors (see below), whose sum is σ = 1287861120. Its totient is φ = 208158720.

The previous prime is 565667969. The next prime is 565667989. The reversal of 565667980 is 89766565.

It is not an unprimeable number, because it can be changed into a prime (565667989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1678372 + ... + 1678708.

It is an arithmetic number, because the mean of its divisors is an integer number (13415220).

Almost surely, 2^565667980 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 565667980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (643930560).

565667980 is an abundant number, since it is smaller than the sum of its proper divisors (722193140).

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

565667980 is a wasteful number, since it uses less digits than its factorization.

565667980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 52.

The square root of 565667980 is about 23783.7755623450. The cubic root of 565667980 is about 827.0286067558.

It can be divided in two parts, 56566 and 7980, that added together give a palindrome (64546).

The spelling of 565667980 in words is "five hundred sixty-five million, six hundred sixty-seven thousand, nine hundred eighty".