259645340 has 12 divisors (see below), whose sum is σ = 545255256. Its totient is φ = 103858128.

The previous prime is 259645327. The next prime is 259645349. The reversal of 259645340 is 43546952.

It is a junction number, because it is equal to n+sod(n) for n = 259645294 and 259645303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259645349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6491114 + ... + 6491153.

It is an arithmetic number, because the mean of its divisors is an integer number (45437938).

Almost surely, 2^259645340 is an apocalyptic number.

259645340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

259645340 is an abundant number, since it is smaller than the sum of its proper divisors (285609916).

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

259645340 is a wasteful number, since it uses less digits than its factorization.

259645340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12982276 (or 12982274 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 259645340 is about 16113.5142039221. The cubic root of 259645340 is about 637.9600902699.

The spelling of 259645340 in words is "two hundred fifty-nine million, six hundred forty-five thousand, three hundred forty".