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69897 = 3231013
BaseRepresentation
bin10001000100001001
310112212210
4101010021
54214042
61255333
7410532
oct210411
9115783
1069897
1148573
1234549
1325a79
141b689
1515a9c
hex11109

69897 has 8 divisors (see below), whose sum is σ = 97344. Its totient is φ = 44528.

The previous prime is 69877. The next prime is 69899. The reversal of 69897 is 79896.

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

It is not a de Polignac number, because 69897 - 26 = 69833 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 69897.

It is not an unprimeable number, because it can be changed into a prime (69899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438 + ... + 575.

It is an arithmetic number, because the mean of its divisors is an integer number (12168).

269897 is an apocalyptic number.

It is an amenable number.

69897 is a deficient number, since it is larger than the sum of its proper divisors (27447).

69897 is a wasteful number, since it uses less digits than its factorization.

69897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039.

The product of its digits is 27216, while the sum is 39.

The square root of 69897 is about 264.3804077461. The cubic root of 69897 is about 41.1926291524.

Subtracting 69897 from its reverse (79896), we obtain a palindrome (9999).

It can be divided in two parts, 6989 and 7, that added together give a palindrome (6996).

The spelling of 69897 in words is "sixty-nine thousand, eight hundred ninety-seven".

Divisors: 1 3 23 69 1013 3039 23299 69897