260001865 has 8 divisors (see below), whose sum is σ = 319258368. Its totient is φ = 203164080.

The previous prime is 260001853. The next prime is 260001883. The reversal of 260001865 is 568100062.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 260001865 - 2⁷ = 260001737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604441 + ... + 604870.

It is an arithmetic number, because the mean of its divisors is an integer number (39907296).

Almost surely, 2^260001865 is an apocalyptic number.

It is an amenable number.

260001865 is a deficient number, since it is larger than the sum of its proper divisors (59256503).

260001865 is a wasteful number, since it uses less digits than its factorization.

260001865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209359.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 260001865 is about 16124.5733276884. The cubic root of 260001865 is about 638.2519559555.

The spelling of 260001865 in words is "two hundred sixty million, one thousand, eight hundred sixty-five".