70306 has 4 divisors (see below), whose sum is σ = 105462. Its totient is φ = 35152.

The previous prime is 70297. The next prime is 70309. The reversal of 70306 is 60307.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60307 = 13 ⋅4639.

It can be written as a sum of positive squares in only one way, i.e., 70225 + 81 = 265^2 + 9^2 .

It is a nialpdrome in base 5.

It is a self number, because there is not a number n which added to its sum of digits gives 70306.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 70306.

It is not an unprimeable number, because it can be changed into a prime (70309) by changing a digit.

70306 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17575 + ... + 17578.

2⁷⁰³⁰⁶ is an apocalyptic number.

70306 is a deficient number, since it is larger than the sum of its proper divisors (35156).

70306 is a wasteful number, since it uses less digits than its factorization.

70306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35155.

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 70306 is about 265.1527861441. The cubic root of 70306 is about 41.2728187185.

Subtracting from 70306 its reverse (60307), we obtain a palindrome (9999).

The spelling of 70306 in words is "seventy thousand, three hundred six".