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66483830 = 2578311443
BaseRepresentation
bin1111110110011…
…1011001110110
311122002201200002
43331213121312
5114004440310
610332551302
71435050260
oct375473166
9148081602
1066483830
113458a316
121a322532
1310a0a25a
148b88b30
155c83da5
hex3f67676

66483830 has 32 divisors (see below), whose sum is σ = 138426624. Its totient is φ = 22517856.

The previous prime is 66483829. The next prime is 66483841. The reversal of 66483830 is 3838466.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

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, 89 + ... + 11531.

It is an arithmetic number, because the mean of its divisors is an integer number (4325832).

Almost surely, 266483830 is an apocalyptic number.

66483830 is an abundant number, since it is smaller than the sum of its proper divisors (71942794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66483830 is a wasteful number, since it uses less digits than its factorization.

66483830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11540.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 66483830 is about 8153.7617085613. The cubic root of 66483830 is about 405.1091104690.

The spelling of 66483830 in words is "sixty-six million, four hundred eighty-three thousand, eight hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 83 166 415 581 830 1162 2905 5810 11443 22886 57215 80101 114430 160202 400505 801010 949769 1899538 4748845 6648383 9497690 13296766 33241915 66483830