487665598221 has 10 divisors (see below), whose sum is σ = 728488115982. Its totient is φ = 325110398760.

The previous prime is 487665598201. The next prime is 487665598223. The reversal of 487665598221 is 122895566784.

487665598221 is a `hidden beast` number, since 4 + 8 + 76 + 6 + 559 + 8 + 2 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 440814995721 + 46850602500 = 663939^2 + 216450^2 .

It is a de Polignac number, because none of the positive numbers 2^k-487665598221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487665598223) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3010281390 + ... + 3010281551.

Almost surely, 2^487665598221 is an apocalyptic number.

It is an amenable number.

487665598221 is a deficient number, since it is larger than the sum of its proper divisors (240822517761).

487665598221 is an equidigital number, since it uses as much as digits as its factorization.

487665598221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6020562953 (or 6020562944 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 63.

The spelling of 487665598221 in words is "four hundred eighty-seven billion, six hundred sixty-five million, five hundred ninety-eight thousand, two hundred twenty-one".