259720764 has 48 divisors (see below), whose sum is σ = 646416288. Its totient is φ = 80877568.

The previous prime is 259720763. The next prime is 259720771. The reversal of 259720764 is 467027952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259720763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23302 + ... + 32594.

It is an arithmetic number, because the mean of its divisors is an integer number (13467006).

Almost surely, 2^259720764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 259720764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323208144).

259720764 is an abundant number, since it is smaller than the sum of its proper divisors (386695524).

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

259720764 is a wasteful number, since it uses less digits than its factorization.

259720764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9454 (or 9452 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 259720764 is about 16115.8544297223. The cubic root of 259720764 is about 638.0218576579.

The spelling of 259720764 in words is "two hundred fifty-nine million, seven hundred twenty thousand, seven hundred sixty-four".