531648605 has 16 divisors (see below), whose sum is σ = 659708928. Its totient is φ = 410880000.

The previous prime is 531648589. The next prime is 531648643. The reversal of 531648605 is 506846135.

It is not a de Polignac number, because 531648605 - 2⁴ = 531648589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96680 + ... + 102030.

It is an arithmetic number, because the mean of its divisors is an integer number (41231808).

Almost surely, 2^531648605 is an apocalyptic number.

It is an amenable number.

531648605 is a deficient number, since it is larger than the sum of its proper divisors (128060323).

531648605 is a wasteful number, since it uses less digits than its factorization.

531648605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6028.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 531648605 is about 23057.5064783684. The cubic root of 531648605 is about 810.1054605358.

The spelling of 531648605 in words is "five hundred thirty-one million, six hundred forty-eight thousand, six hundred five".