657421363 has 8 divisors (see below), whose sum is σ = 662745600. Its totient is φ = 652119048.

The previous prime is 657421361. The next prime is 657421379. The reversal of 657421363 is 363124756.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 657421363 - 2¹ = 657421361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (657421361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57628 + ... + 68086.

It is an arithmetic number, because the mean of its divisors is an integer number (82843200).

Almost surely, 2^657421363 is an apocalyptic number.

657421363 is a deficient number, since it is larger than the sum of its proper divisors (5324237).

657421363 is a wasteful number, since it uses less digits than its factorization.

657421363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10961.

The product of its digits is 90720, while the sum is 37.

The square root of 657421363 is about 25640.2293866494. The cubic root of 657421363 is about 869.5233937718.

The spelling of 657421363 in words is "six hundred fifty-seven million, four hundred twenty-one thousand, three hundred sixty-three".