530781664 has 96 divisors (see below), whose sum is σ = 1249214400. Its totient is φ = 217190400.

The previous prime is 530781661. The next prime is 530781677. The reversal of 530781664 is 466187035.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530781661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 655692 + ... + 656500.

It is an arithmetic number, because the mean of its divisors is an integer number (13012650).

Almost surely, 2^530781664 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 530781664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (624607200).

530781664 is an abundant number, since it is smaller than the sum of its proper divisors (718432736).

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

530781664 is a wasteful number, since it uses less digits than its factorization.

530781664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956 (or 948 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 530781664 is about 23038.6992688389. The cubic root of 530781664 is about 809.6648839821.

The spelling of 530781664 in words is "five hundred thirty million, seven hundred eighty-one thousand, six hundred sixty-four".