534816640 has 64 divisors (see below), whose sum is σ = 1302752160. Its totient is φ = 209876992.

The previous prime is 534816629. The next prime is 534816643. The reversal of 534816640 is 46618435.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 534816640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (534816643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26037 + ... + 41803.

Almost surely, 2^534816640 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 534816640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (651376080).

534816640 is an abundant number, since it is smaller than the sum of its proper divisors (767935520).

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

534816640 is a wasteful number, since it uses less digits than its factorization.

534816640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15839 (or 15827 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 534816640 is about 23126.1030007219. The cubic root of 534816640 is about 811.7113844001.

The spelling of 534816640 in words is "five hundred thirty-four million, eight hundred sixteen thousand, six hundred forty".