65898483849 has 45 divisors (see below), whose sum is σ = 108245428599. Its totient is φ = 39923072640.

The previous prime is 65898483829. The next prime is 65898483899. The reversal of 65898483849 is 94838489856.

The square root of 65898483849 is 256707.

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

65898483849 is a `hidden beast` number, since 6 + 58 + 98 + 483 + 8 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 39794265225 + 26104218624 = 199485^2 + 161568^2 .

It is not a de Polignac number, because 65898483849 - 2³³ = 57308549257 is a prime.

It is a super-2 number, since 2×65898483849² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65898483829) 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 44 ways as a sum of consecutive naturals, for example, 25412697 + ... + 25415289.

Almost surely, 2^65898483849 is an apocalyptic number.

65898483849 is the 256707-th square number.

65898483849 is the 128354-th centered octagonal number.

It is an amenable number.

65898483849 is a deficient number, since it is larger than the sum of its proper divisors (42346944750).

65898483849 is an frugal number, since it uses more digits than its factorization.

65898483849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5220 (or 2607 counting only the distinct ones).

The product of its digits is 477757440, while the sum is 72.

The spelling of 65898483849 in words is "sixty-five billion, eight hundred ninety-eight million, four hundred eighty-three thousand, eight hundred forty-nine".