535309866 has 144 divisors (see below), whose sum is σ = 1499112576. Its totient is φ = 134918784.

The previous prime is 535309847. The next prime is 535309867. The reversal of 535309866 is 668903535.

535309866 is a `hidden beast` number, since 53 + 530 + 9 + 8 + 66 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (535309867) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 489216 + ... + 490308.

It is an arithmetic number, because the mean of its divisors is an integer number (10410504).

Almost surely, 2^535309866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 535309866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (749556288).

535309866 is an abundant number, since it is smaller than the sum of its proper divisors (963802710).

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

535309866 is a wasteful number, since it uses less digits than its factorization.

535309866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157 (or 1141 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The square root of 535309866 is about 23136.7643805265. The cubic root of 535309866 is about 811.9608369652.

The spelling of 535309866 in words is "five hundred thirty-five million, three hundred nine thousand, eight hundred sixty-six".