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69983 = 471489
BaseRepresentation
bin10001000101011111
310112222222
4101011133
54214413
61255555
7411014
oct210537
9115888
1069983
1148641
12345bb
1325b14
141b70b
1515b08
hex1115f

69983 has 4 divisors (see below), whose sum is σ = 71520. Its totient is φ = 68448.

The previous prime is 69959. The next prime is 69991. The reversal of 69983 is 38996.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 69983 - 216 = 4447 is a prime.

It is a Duffinian number.

It is a plaindrome in base 6, base 9, base 12 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69383) 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, 698 + ... + 791.

It is an arithmetic number, because the mean of its divisors is an integer number (17880).

269983 is an apocalyptic number.

69983 is a deficient number, since it is larger than the sum of its proper divisors (1537).

69983 is a wasteful number, since it uses less digits than its factorization.

69983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536.

The product of its digits is 11664, while the sum is 35.

The square root of 69983 is about 264.5430021754. The cubic root of 69983 is about 41.2095164494.

The spelling of 69983 in words is "sixty-nine thousand, nine hundred eighty-three".

Divisors: 1 47 1489 69983