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64944105 = 356764621
BaseRepresentation
bin1111011110111…
…1011111101001
311112012111120020
43313233133221
5113111202410
610235551053
71416005262
oct367573751
9145174506
1064944105
1133728516
12198bb489
13105bb485
1488a7969
155a7ca70
hex3def7e9

64944105 has 16 divisors (see below), whose sum is σ = 105463104. Its totient is φ = 34119360.

The previous prime is 64944049. The next prime is 64944127. The reversal of 64944105 is 50144946.

It is not a de Polignac number, because 64944105 - 215 = 64911337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31306 + ... + 33315.

It is an arithmetic number, because the mean of its divisors is an integer number (6591444).

Almost surely, 264944105 is an apocalyptic number.

It is an amenable number.

64944105 is a deficient number, since it is larger than the sum of its proper divisors (40518999).

64944105 is a wasteful number, since it uses less digits than its factorization.

64944105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64696.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 64944105 is about 8058.7905420106. The cubic root of 64944105 is about 401.9572923121.

The spelling of 64944105 in words is "sixty-four million, nine hundred forty-four thousand, one hundred five".

Divisors: 1 3 5 15 67 201 335 1005 64621 193863 323105 969315 4329607 12988821 21648035 64944105