598950618561 has 15 divisors (see below), whose sum is σ = 894739106833. Its totient is φ = 399295768860.

The previous prime is 598950618379. The next prime is 598950618571. The reversal of 598950618561 is 165816059895.

The square root of 598950618561 is 773919.

It is a perfect power (a square), and thus also a powerful number.

598950618561 is a `hidden beast` number, since 5 + 9 + 8 + 9 + 5 + 0 + 61 + 8 + 561 = 666.

It is not a de Polignac number, because 598950618561 - 2¹³ = 598950610369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (598950618571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 6922276 + ... + 7008266.

Almost surely, 2^598950618561 is an apocalyptic number.

598950618561 is the 773919-th square number.

598950618561 is the 386960-th centered octagonal number.

It is an amenable number.

598950618561 is a deficient number, since it is larger than the sum of its proper divisors (295788488272).

598950618561 is an frugal number, since it uses more digits than its factorization.

598950618561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171994 (or 85994 counting only the distinct ones).

The product of its (nonzero) digits is 23328000, while the sum is 63.

The spelling of 598950618561 in words is "five hundred ninety-eight billion, nine hundred fifty million, six hundred eighteen thousand, five hundred sixty-one".