6259398561 has 24 divisors (see below), whose sum is σ = 9779777280. Its totient is φ = 3834952416.

The previous prime is 6259398517. The next prime is 6259398583. The reversal of 6259398561 is 1658939526.

It is a happy number.

6259398561 is a `hidden beast` number, since 625 + 9 + 3 + 9 + 8 + 5 + 6 + 1 = 666.

It is not a de Polignac number, because 6259398561 - 2⁹ = 6259398049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6259398498 and 6259398507.

It is not an unprimeable number, because it can be changed into a prime (6259398161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91281 + ... + 144398.

It is an arithmetic number, because the mean of its divisors is an integer number (407490720).

Almost surely, 2^6259398561 is an apocalyptic number.

It is an amenable number.

6259398561 is a deficient number, since it is larger than the sum of its proper divisors (3520378719).

6259398561 is a wasteful number, since it uses less digits than its factorization.

6259398561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235925 (or 235922 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The square root of 6259398561 is about 79116.3608933070. The cubic root of 6259398561 is about 1842.9386094121.

The spelling of 6259398561 in words is "six billion, two hundred fifty-nine million, three hundred ninety-eight thousand, five hundred sixty-one".