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70071 = 323357
BaseRepresentation
bin10001000110110111
310120010020
4101012313
54220241
61300223
7411201
oct210667
9116106
1070071
1148711
1234673
1325b81
141b771
1515b66
hex111b7

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 = 35669.

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.

Divisors: 1 3 23357 70071