285064213 has 8 divisors (see below), whose sum is σ = 332436800. Its totient is φ = 244340460.

The previous prime is 285064207. The next prime is 285064217. The reversal of 285064213 is 312460582.

It is a de Polignac number, because none of the positive numbers 2^k-285064213 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 (285064217) 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, 415203 + ... + 415888.

It is an arithmetic number, because the mean of its divisors is an integer number (41554600).

Almost surely, 2^285064213 is an apocalyptic number.

It is an amenable number.

285064213 is a deficient number, since it is larger than the sum of its proper divisors (47372587).

285064213 is an frugal number, since it uses more digits than its factorization.

285064213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831112 (or 831098 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 285064213 is about 16883.8447339461. The cubic root of 285064213 is about 658.1338568781.

The spelling of 285064213 in words is "two hundred eighty-five million, sixty-four thousand, two hundred thirteen".