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65505895 = 57213131157
BaseRepresentation
bin1111100111100…
…0101001100111
311120021001012021
43321320221213
5113232142040
610300004011
71423535200
oct371705147
9146231167
1065505895
1133a81604
1219b30607
13107570b0
1489b25a7
155b3e24a
hex3e78a67

65505895 has 48 divisors (see below), whose sum is σ = 99858528. Its totient is φ = 40884480.

The previous prime is 65505889. The next prime is 65505907. The reversal of 65505895 is 59850556.

It is not a de Polignac number, because 65505895 - 27 = 65505767 is a prime.

65505895 is a modest number, since divided by 5895 gives 655 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 417157 + ... + 417313.

It is an arithmetic number, because the mean of its divisors is an integer number (2080386).

Almost surely, 265505895 is an apocalyptic number.

65505895 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

65505895 is a deficient number, since it is larger than the sum of its proper divisors (34352633).

65505895 is a wasteful number, since it uses less digits than its factorization.

65505895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 43.

The square root of 65505895 is about 8093.5712142416. The cubic root of 65505895 is about 403.1129916099.

The spelling of 65505895 in words is "sixty-five million, five hundred five thousand, eight hundred ninety-five".

Divisors: 1 5 7 13 35 49 65 91 131 157 245 455 637 655 785 917 1099 1703 2041 3185 4585 5495 6419 7693 8515 10205 11921 14287 20567 32095 38465 59605 71435 83447 100009 102835 143969 267371 417235 500045 719845 1007783 1336855 1871597 5038915 9357985 13101179 65505895