285775013 has 8 divisors (see below), whose sum is σ = 295646232. Its totient is φ = 276016896.

The previous prime is 285774971. The next prime is 285775027. The reversal of 285775013 is 310577582.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 31787044 + 253987969 = 5638^2 + 15937^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 285775013 - 2⁶ = 285774949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285775073) 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, 23120 + ... + 33257.

It is an arithmetic number, because the mean of its divisors is an integer number (36955779).

Almost surely, 2^285775013 is an apocalyptic number.

It is an amenable number.

285775013 is a deficient number, since it is larger than the sum of its proper divisors (9871219).

285775013 is a wasteful number, since it uses less digits than its factorization.

285775013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56551.

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 285775013 is about 16904.8813364661. The cubic root of 285775013 is about 658.6804159164.

The spelling of 285775013 in words is "two hundred eighty-five million, seven hundred seventy-five thousand, thirteen".