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69913 = 151463
BaseRepresentation
bin10001000100011001
310112220101
4101010121
54214123
61255401
7410554
oct210431
9115811
1069913
1148588
1234561
1325a8c
141b69b
1515aad
hex11119

69913 has 4 divisors (see below), whose sum is σ = 70528. Its totient is φ = 69300.

The previous prime is 69911. The next prime is 69929. The reversal of 69913 is 31996.

It is a happy number.

69913 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 69913 - 21 = 69911 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15 and base 16.

It is not an unprimeable number, because it can be changed into a prime (69911) 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, 81 + ... + 382.

It is an arithmetic number, because the mean of its divisors is an integer number (17632).

269913 is an apocalyptic number.

It is an amenable number.

69913 is a deficient number, since it is larger than the sum of its proper divisors (615).

69913 is a wasteful number, since it uses less digits than its factorization.

69913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614.

The product of its digits is 1458, while the sum is 28.

The square root of 69913 is about 264.4106654430. The cubic root of 69913 is about 41.1957720235.

The spelling of 69913 in words is "sixty-nine thousand, nine hundred thirteen".

Divisors: 1 151 463 69913