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105664033 = 531993661
BaseRepresentation
bin1100100110001…
…00111000100001
321100211021210201
412103010320201
5204022222113
614252425201
72422062256
oct623047041
9240737721
10105664033
115470aa52
122b478201
1318b778c7
141006742d
159422cdd
hex64c4e21

105664033 has 4 divisors (see below), whose sum is σ = 107657748. Its totient is φ = 103670320.

The previous prime is 105664021. The next prime is 105664043. The reversal of 105664033 is 330466501.

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

It can be written as a sum of positive squares in 2 ways, for example, as 62853184 + 42810849 = 7928^2 + 6543^2 .

It is a cyclic number.

It is not a de Polignac number, because 105664033 - 225 = 72109601 is a prime.

It is a super-2 number, since 2×1056640332 = 22329775739650178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105663992 and 105664010.

It is not an unprimeable number, because it can be changed into a prime (105664003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 996778 + ... + 996883.

It is an arithmetic number, because the mean of its divisors is an integer number (26914437).

Almost surely, 2105664033 is an apocalyptic number.

It is an amenable number.

105664033 is a deficient number, since it is larger than the sum of its proper divisors (1993715).

105664033 is an equidigital number, since it uses as much as digits as its factorization.

105664033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993714.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 105664033 is about 10279.3011922017. The cubic root of 105664033 is about 472.7618182606.

The spelling of 105664033 in words is "one hundred five million, six hundred sixty-four thousand, thirty-three".

Divisors: 1 53 1993661 105664033