657234241 has 4 divisors (see below), whose sum is σ = 657285552. Its totient is φ = 657182932.

The previous prime is 657234203. The next prime is 657234307. The reversal of 657234241 is 142432756.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 657234241 - 2⁹ = 657233729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 657234197 and 657234206.

It is not an unprimeable number, because it can be changed into a prime (657234341) 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, 11370 + ... + 37996.

It is an arithmetic number, because the mean of its divisors is an integer number (164321388).

Almost surely, 2^657234241 is an apocalyptic number.

It is an amenable number.

657234241 is a deficient number, since it is larger than the sum of its proper divisors (51311).

657234241 is a wasteful number, since it uses less digits than its factorization.

657234241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51310.

The product of its digits is 40320, while the sum is 34.

The square root of 657234241 is about 25636.5801346435. The cubic root of 657234241 is about 869.4408883929.

Adding to 657234241 its reverse (142432756), we get a palindrome (799666997).

The spelling of 657234241 in words is "six hundred fifty-seven million, two hundred thirty-four thousand, two hundred forty-one".