562689666 has 160 divisors (see below), whose sum is σ = 1594644480. Its totient is φ = 144050400.

The previous prime is 562689661. The next prime is 562689689. The reversal of 562689666 is 666986265.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (562689661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 985161 + ... + 985731.

It is an arithmetic number, because the mean of its divisors is an integer number (9966528).

Almost surely, 2^562689666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 562689666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (797322240).

562689666 is an abundant number, since it is smaller than the sum of its proper divisors (1031954814).

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

562689666 is a wasteful number, since it uses less digits than its factorization.

562689666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682 (or 673 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The square root of 562689666 is about 23721.0806246259. The cubic root of 562689666 is about 825.5745815508.

The spelling of 562689666 in words is "five hundred sixty-two million, six hundred eighty-nine thousand, six hundred sixty-six".