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66627141 = 373172721
BaseRepresentation
bin1111111000101…
…0011001000101
311122101000020220
43332022121011
5114024032031
610340014553
71436215140
oct376123105
9148330226
1066627141
1134677a59
121a391459
1310a5a559
148bc5057
155cb1596
hex3f8a645

66627141 has 8 divisors (see below), whose sum is σ = 101527104. Its totient is φ = 38072640.

The previous prime is 66627083. The next prime is 66627149. The reversal of 66627141 is 14172666.

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

It is not a de Polignac number, because 66627141 - 29 = 66626629 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66627149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1586340 + ... + 1586381.

It is an arithmetic number, because the mean of its divisors is an integer number (12690888).

Almost surely, 266627141 is an apocalyptic number.

It is an amenable number.

66627141 is a deficient number, since it is larger than the sum of its proper divisors (34899963).

66627141 is a wasteful number, since it uses less digits than its factorization.

66627141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3172731.

The product of its digits is 12096, while the sum is 33.

The square root of 66627141 is about 8162.5450075329. The cubic root of 66627141 is about 405.3999828333.

The spelling of 66627141 in words is "sixty-six million, six hundred twenty-seven thousand, one hundred forty-one".

Divisors: 1 3 7 21 3172721 9518163 22209047 66627141