529663680 has 672 divisors, whose sum is σ = 2343204864. Its totient is φ = 106831872.

The previous prime is 529663663. The next prime is 529663681. The reversal of 529663680 is 86366925.

It is a happy number.

529663680 is a `hidden beast` number, since 5 + 2 + 9 + 6 + 636 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a super-2 number, since 2×529663680² = 561087227822284800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (529663681) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11269417 + ... + 11269463.

It is an arithmetic number, because the mean of its divisors is an integer number (3486912).

Almost surely, 2^529663680 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 529663680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1171602432).

529663680 is an abundant number, since it is smaller than the sum of its proper divisors (1813541184).

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

529663680 is a wasteful number, since it uses less digits than its factorization.

529663680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 529663680 is about 23014.4233036589. The cubic root of 529663680 is about 809.0960194021.

The spelling of 529663680 in words is "five hundred twenty-nine million, six hundred sixty-three thousand, six hundred eighty".