259985466 has 24 divisors (see below), whose sum is σ = 606633300. Its totient is φ = 79995456.

The previous prime is 259985443. The next prime is 259985483. The reversal of 259985466 is 664589952.

It is a happy number.

259985466 is a `hidden beast` number, since 2 + 5 + 9 + 98 + 546 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 227255625 + 32729841 = 15075^2 + 5721^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 555291 + ... + 555758.

Almost surely, 2^259985466 is an apocalyptic number.

259985466 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

259985466 is an abundant number, since it is smaller than the sum of its proper divisors (346647834).

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

259985466 is a wasteful number, since it uses less digits than its factorization.

259985466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111070 (or 1111067 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The square root of 259985466 is about 16124.0648100905. The cubic root of 259985466 is about 638.2385369314.

The spelling of 259985466 in words is "two hundred fifty-nine million, nine hundred eighty-five thousand, four hundred sixty-six".