70285 has 4 divisors (see below), whose sum is σ = 84348. Its totient is φ = 56224.

The previous prime is 70271. The next prime is 70289. The reversal of 70285 is 58207.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11236 + 59049 = 106^2 + 243^2 .

It is a cyclic number.

It is not a de Polignac number, because 70285 - 2⁷ = 70157 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7024 + ... + 7033.

It is an arithmetic number, because the mean of its divisors is an integer number (21087).

2⁷⁰²⁸⁵ is an apocalyptic number.

It is an amenable number.

70285 is a deficient number, since it is larger than the sum of its proper divisors (14063).

70285 is a wasteful number, since it uses less digits than its factorization.

70285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14062.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 70285 is about 265.1131833765. The cubic root of 70285 is about 41.2687089910.

Adding to 70285 its sum of digits (22), we get a palindrome (70307).

It can be divided in two parts, 702 and 85, that added together give a palindrome (787).

The spelling of 70285 in words is "seventy thousand, two hundred eighty-five".