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64108907 = 192257691
BaseRepresentation
bin1111010010001…
…1100101101011
311110122001212222
43310203211223
5112402441112
610210024255
71405626302
oct364434553
9143561788
1064108907
1133207a75
121957808b
1310388285
14872b439
155965372
hex3d2396b

64108907 has 12 divisors (see below), whose sum is σ = 68022216. Its totient is φ = 60410880.

The previous prime is 64108867. The next prime is 64108927. The reversal of 64108907 is 70980146.

It is a de Polignac number, because none of the positive numbers 2k-64108907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64108927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92432 + ... + 93122.

It is an arithmetic number, because the mean of its divisors is an integer number (5668518).

Almost surely, 264108907 is an apocalyptic number.

64108907 is a deficient number, since it is larger than the sum of its proper divisors (3913309).

64108907 is a wasteful number, since it uses less digits than its factorization.

64108907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986 (or 967 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 64108907 is about 8006.8037942740. The cubic root of 64108907 is about 400.2267610077.

The spelling of 64108907 in words is "sixty-four million, one hundred eight thousand, nine hundred seven".

Divisors: 1 19 257 361 691 4883 13129 92777 177587 249451 3374153 64108907