285260861 has 8 divisors (see below), whose sum is σ = 293255424. Its totient is φ = 277281360.

The previous prime is 285260831. The next prime is 285260873. The reversal of 285260861 is 168062582.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285260861 is a prime.

It is a super-2 number, since 2×285260861² = 162747517636922642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285260831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42416 + ... + 48678.

It is an arithmetic number, because the mean of its divisors is an integer number (36656928).

Almost surely, 2^285260861 is an apocalyptic number.

It is an amenable number.

285260861 is a deficient number, since it is larger than the sum of its proper divisors (7994563).

285260861 is a wasteful number, since it uses less digits than its factorization.

285260861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7531.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 285260861 is about 16889.6672850592. The cubic root of 285260861 is about 658.2851572430.

The spelling of 285260861 in words is "two hundred eighty-five million, two hundred sixty thousand, eight hundred sixty-one".