70913 has 2 divisors, whose sum is σ = 70914.
Its totient is φ = 70912.
The previous prime is 70901. The next prime is 70919. The reversal of 70913 is 31907.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 61504 + 9409 = 248^2 + 97^2
It is an emirp because it is prime and its reverse (31907) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 70913 - 26 = 70849 is a prime.
It is not a weakly prime, because it can be changed into another prime (70919) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a good prime.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35456 + 35457.
It is an arithmetic number, because the mean of its divisors is an integer number (35457).
270913 is an apocalyptic number.
It is an amenable number.
70913 is a deficient number, since it is larger than the sum of its proper divisors (1).
70913 is an equidigital number, since it uses as much as digits as its factorization.
70913 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 189, while the sum is 20.
The square root of 70913 is about 266.2949492574.
The cubic root of 70913 is about 41.3912573821.
The spelling of 70913 in words is "seventy thousand, nine hundred thirteen".