531608740 has 24 divisors (see below), whose sum is σ = 1202254200. Its totient is φ = 196286208.

The previous prime is 531608731. The next prime is 531608743. The reversal of 531608740 is 47806135.

It can be written as a sum of positive squares in 4 ways, for example, as 5456896 + 526151844 = 2336^2 + 22938^2 .

It is a junction number, because it is equal to n+sod(n) for n = 531608696 and 531608705.

It is not an unprimeable number, because it can be changed into a prime (531608743) 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, 1022065 + ... + 1022584.

It is an arithmetic number, because the mean of its divisors is an integer number (50093925).

Almost surely, 2^531608740 is an apocalyptic number.

It is an amenable number.

531608740 is an abundant number, since it is smaller than the sum of its proper divisors (670645460).

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

531608740 is a wasteful number, since it uses less digits than its factorization.

531608740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044671 (or 2044669 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 531608740 is about 23056.6419931438. The cubic root of 531608740 is about 810.0852117843.

The spelling of 531608740 in words is "five hundred thirty-one million, six hundred eight thousand, seven hundred forty".