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65307385 = 51113241379
BaseRepresentation
bin1111100100100…
…0001011111001
311112212221220001
43321020023321
5113204314020
610251433001
71422050353
oct371101371
9145787801
1065307385
1133956450
1219a55761
13106b7930
1489600d3
155b0050a
hex3e482f9

65307385 has 32 divisors (see below), whose sum is σ = 92695680. Its totient is φ = 43545600.

The previous prime is 65307377. The next prime is 65307401. The reversal of 65307385 is 58370356.

It is not a de Polignac number, because 65307385 - 23 = 65307377 is a prime.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 172126 + ... + 172504.

It is an arithmetic number, because the mean of its divisors is an integer number (2896740).

Almost surely, 265307385 is an apocalyptic number.

65307385 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

65307385 is a deficient number, since it is larger than the sum of its proper divisors (27388295).

65307385 is a wasteful number, since it uses less digits than its factorization.

65307385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 65307385 is about 8081.2984723991. The cubic root of 65307385 is about 402.7053797985.

The spelling of 65307385 in words is "sixty-five million, three hundred seven thousand, three hundred eighty-five".

Divisors: 1 5 11 13 55 65 143 241 379 715 1205 1895 2651 3133 4169 4927 13255 15665 20845 24635 34463 54197 91339 172315 270985 456695 1004729 1187407 5023645 5937035 13061477 65307385