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66483831 = 3191166383
BaseRepresentation
bin1111110110011…
…1011001110111
311122002201200010
43331213121313
5114004440311
610332551303
71435050261
oct375473167
9148081603
1066483831
113458a317
121a322533
1310a0a25b
148b88b31
155c83da6
hex3f67677

66483831 has 8 divisors (see below), whose sum is σ = 93310720. Its totient is φ = 41989752.

The previous prime is 66483829. The next prime is 66483841. The reversal of 66483831 is 13838466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66483831 - 21 = 66483829 is a prime.

It is a super-2 number, since 2×664838312 = 8840199568873122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66483831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66483841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 583135 + ... + 583248.

It is an arithmetic number, because the mean of its divisors is an integer number (11663840).

Almost surely, 266483831 is an apocalyptic number.

66483831 is a deficient number, since it is larger than the sum of its proper divisors (26826889).

66483831 is a wasteful number, since it uses less digits than its factorization.

66483831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166405.

The product of its digits is 82944, while the sum is 39.

The square root of 66483831 is about 8153.7617698827. The cubic root of 66483831 is about 405.1091125001.

The spelling of 66483831 in words is "sixty-six million, four hundred eighty-three thousand, eight hundred thirty-one".

Divisors: 1 3 19 57 1166383 3499149 22161277 66483831