259557967 has 4 divisors (see below), whose sum is σ = 270843120. Its totient is φ = 248272816.

The previous prime is 259557959. The next prime is 259557979. The reversal of 259557967 is 769755952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 259557967 - 2³ = 259557959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259557937) 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, 5642542 + ... + 5642587.

It is an arithmetic number, because the mean of its divisors is an integer number (67710780).

Almost surely, 2^259557967 is an apocalyptic number.

259557967 is a deficient number, since it is larger than the sum of its proper divisors (11285153).

259557967 is a wasteful number, since it uses less digits than its factorization.

259557967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11285152.

The product of its digits is 5953500, while the sum is 55.

The square root of 259557967 is about 16110.8028043298. The cubic root of 259557967 is about 637.8885224658. Note that the first 3 decimals are identical.

The spelling of 259557967 in words is "two hundred fifty-nine million, five hundred fifty-seven thousand, nine hundred sixty-seven".