Search a number
-
+
64343105 = 561210961
BaseRepresentation
bin1111010101110…
…0110001000001
311111001222010222
43311130301001
5112432434410
610215032425
71410623141
oct365346101
9144058128
1064343105
1133357a22
121966b715
131043aa58
14878c921
1559ae955
hex3d5cc41

64343105 has 8 divisors (see below), whose sum is σ = 78477864. Its totient is φ = 50630400.

The previous prime is 64343087. The next prime is 64343119. The reversal of 64343105 is 50134346.

64343105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5345344 + 58997761 = 2312^2 + 7681^2 .

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

It is not a de Polignac number, because 64343105 - 28 = 64342849 is a prime.

It is a super-2 number, since 2×643431052 = 8280070322082050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105176 + ... + 105785.

It is an arithmetic number, because the mean of its divisors is an integer number (9809733).

Almost surely, 264343105 is an apocalyptic number.

It is an amenable number.

64343105 is a deficient number, since it is larger than the sum of its proper divisors (14134759).

64343105 is a wasteful number, since it uses less digits than its factorization.

64343105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211027.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 64343105 is about 8021.4153987934. The cubic root of 64343105 is about 400.7135285191.

The spelling of 64343105 in words is "sixty-four million, three hundred forty-three thousand, one hundred five".

Divisors: 1 5 61 305 210961 1054805 12868621 64343105