259681968 has 360 divisors, whose sum is σ = 964782000. Its totient is φ = 64447488.

The previous prime is 259681963. The next prime is 259681973. The reversal of 259681968 is 869186952.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (259681963) and next prime (259681973).

It is not an unprimeable number, because it can be changed into a prime (259681963) 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 71 ways as a sum of consecutive naturals, for example, 1742758 + ... + 1742906.

It is an arithmetic number, because the mean of its divisors is an integer number (2679950).

Almost surely, 2^259681968 is an apocalyptic number.

259681968 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 259681968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (482391000).

259681968 is an abundant number, since it is smaller than the sum of its proper divisors (705100032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

259681968 is a wasteful number, since it uses less digits than its factorization.

259681968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 193 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 259681968 is about 16114.6507253493. The cubic root of 259681968 is about 637.9900877317.

The spelling of 259681968 in words is "two hundred fifty-nine million, six hundred eighty-one thousand, nine hundred sixty-eight".