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64081105 = 51123179283
BaseRepresentation
bin1111010001110…
…0110011010001
311110120122202021
43310130303101
5112401043410
610205251441
71405452244
oct364346321
9143518667
1064081105
11331990a0
1219563b81
131037871a
14872125b
15595beda
hex3d1ccd1

64081105 has 32 divisors (see below), whose sum is σ = 88335360. Its totient is φ = 44172480.

The previous prime is 64081093. The next prime is 64081111. The reversal of 64081105 is 50118046.

It is not a de Polignac number, because 64081105 - 29 = 64080593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64081105.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 226294 + ... + 226576.

It is an arithmetic number, because the mean of its divisors is an integer number (2760480).

Almost surely, 264081105 is an apocalyptic number.

It is an amenable number.

64081105 is a deficient number, since it is larger than the sum of its proper divisors (24254255).

64081105 is a wasteful number, since it uses less digits than its factorization.

64081105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 64081105 is about 8005.0674575546. The cubic root of 64081105 is about 400.1688974241.

The spelling of 64081105 in words is "sixty-four million, eighty-one thousand, one hundred five".

Divisors: 1 5 11 23 55 115 179 253 283 895 1265 1415 1969 3113 4117 6509 9845 15565 20585 32545 45287 50657 71599 226435 253285 357995 557227 1165111 2786135 5825555 12816221 64081105