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79871 = 1153137
BaseRepresentation
bin10011011111111111
311001120012
4103133333
510023441
61413435
7451601
oct233777
9131505
1079871
1155010
123a27b
132a47c
1421171
15189eb
hex137ff

79871 has 8 divisors (see below), whose sum is σ = 89424. Its totient is φ = 70720.

The previous prime is 79867. The next prime is 79873. The reversal of 79871 is 17897.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79871 - 22 = 79867 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 515 + ... + 651.

It is an arithmetic number, because the mean of its divisors is an integer number (11178).

279871 is an apocalyptic number.

79871 is a deficient number, since it is larger than the sum of its proper divisors (9553).

79871 is a wasteful number, since it uses less digits than its factorization.

79871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201.

The product of its digits is 3528, while the sum is 32.

The square root of 79871 is about 282.6145785341. The cubic root of 79871 is about 43.0655211680.

The spelling of 79871 in words is "seventy-nine thousand, eight hundred seventy-one".

Divisors: 1 11 53 137 583 1507 7261 79871