657531484 has 12 divisors (see below), whose sum is σ = 1154096944. Its totient is φ = 327789504.

The previous prime is 657531481. The next prime is 657531527. The reversal of 657531484 is 484135756.

It is a self number, because there is not a number n which added to its sum of digits gives 657531484.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (657531481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242544 + ... + 245239.

Almost surely, 2^657531484 is an apocalyptic number.

It is an amenable number.

657531484 is a deficient number, since it is larger than the sum of its proper divisors (496565460).

657531484 is a wasteful number, since it uses less digits than its factorization.

657531484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488124 (or 488122 counting only the distinct ones).

The product of its digits is 403200, while the sum is 43.

The square root of 657531484 is about 25642.3767229171. The cubic root of 657531484 is about 869.5719407389.

The spelling of 657531484 in words is "six hundred fifty-seven million, five hundred thirty-one thousand, four hundred eighty-four".