70071 has 4 divisors (see below), whose sum is σ = 93432. Its totient is φ = 46712.
The previous prime is 70067. The next prime is 70079. The reversal of 70071 is 17007.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17007 = 3 ⋅5669.
It is a cyclic number.
It is not a de Polignac number, because 70071 - 22 = 70067 is a prime.
It is a D-number.
70071 is a lucky number.
It is a self number, because there is not a number n which added to its sum of digits gives 70071.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 70071.
It is not an unprimeable number, because it can be changed into a prime (70079) 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, 11676 + ... + 11681.
It is an arithmetic number, because the mean of its divisors is an integer number (23358).
270071 is an apocalyptic number.
70071 is a deficient number, since it is larger than the sum of its proper divisors (23361).
70071 is a wasteful number, since it uses less digits than its factorization.
70071 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 23360.
The product of its (nonzero) digits is 49, while the sum is 15.
The square root of 70071 is about 264.7092744881. The cubic root of 70071 is about 41.2267821591.
Adding to 70071 its reverse (17007), we get a palindrome (87078).
The spelling of 70071 in words is "seventy thousand, seventy-one", and thus it is an iban number.
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