533642868 has 72 divisors (see below), whose sum is σ = 1474112640. Its totient is φ = 161429760.

The previous prime is 533642831. The next prime is 533642899. The reversal of 533642868 is 868246335.

It is a happy number.

533642868 is a `hidden beast` number, since 5 + 3 + 364 + 286 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 410796 + ... + 412092.

Almost surely, 2^533642868 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 533642868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (737056320).

533642868 is an abundant number, since it is smaller than the sum of its proper divisors (940469772).

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

533642868 is a wasteful number, since it uses less digits than its factorization.

533642868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357 (or 2352 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 533642868 is about 23100.7114176166. The cubic root of 533642868 is about 811.1171234321.

The spelling of 533642868 in words is "five hundred thirty-three million, six hundred forty-two thousand, eight hundred sixty-eight".