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64544105 = 513039907
BaseRepresentation
bin1111011000110…
…1110101101001
311111110011212102
43312031311221
5113010402410
610223223145
71412421143
oct366156551
9144404772
1064544105
1133484a3a
1219747ab5
13104ab3a2
148801c93
1559ee2a5
hex3d8dd69

64544105 has 8 divisors (see below), whose sum is σ = 77520192. Its totient is φ = 51590448.

The previous prime is 64544099. The next prime is 64544107. The reversal of 64544105 is 50144546.

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

It is a cyclic number.

It is not a de Polignac number, because 64544105 - 210 = 64543081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64544107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1562 + ... + 11468.

It is an arithmetic number, because the mean of its divisors is an integer number (9690024).

Almost surely, 264544105 is an apocalyptic number.

It is an amenable number.

64544105 is a deficient number, since it is larger than the sum of its proper divisors (12976087).

64544105 is a wasteful number, since it uses less digits than its factorization.

64544105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11215.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 64544105 is about 8033.9345902241. The cubic root of 64544105 is about 401.1303548194.

The spelling of 64544105 in words is "sixty-four million, five hundred forty-four thousand, one hundred five".

Divisors: 1 5 1303 6515 9907 49535 12908821 64544105