285072613 has 4 divisors (see below), whose sum is σ = 325797280. Its totient is φ = 244347948.

The previous prime is 285072583. The next prime is 285072629. The reversal of 285072613 is 316270582.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 316270582 = 2 ⋅158135291.

It is a cyclic number.

It is not a de Polignac number, because 285072613 - 2¹⁷ = 284941541 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 (285072653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20362323 + ... + 20362336.

It is an arithmetic number, because the mean of its divisors is an integer number (81449320).

Almost surely, 2^285072613 is an apocalyptic number.

It is an amenable number.

285072613 is a deficient number, since it is larger than the sum of its proper divisors (40724667).

285072613 is an equidigital number, since it uses as much as digits as its factorization.

285072613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40724666.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 285072613 is about 16884.0934906201. The cubic root of 285072613 is about 658.1403212346.

The spelling of 285072613 in words is "two hundred eighty-five million, seventy-two thousand, six hundred thirteen".