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66676148 = 22711216481
BaseRepresentation
bin1111111001011…
…0010110110100
311122110111110222
43332112112310
5114032114043
610341033512
71436511050
oct376262664
9148414428
1066676148
1134700860
121a3b5898
1310a76956
148bd8c60
155cc0d68
hex3f965b4

66676148 has 24 divisors (see below), whose sum is σ = 145475904. Its totient is φ = 25977600.

The previous prime is 66676147. The next prime is 66676153. The reversal of 66676148 is 84167666.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 66676099 and 66676108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66676147) 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, 107933 + ... + 108548.

It is an arithmetic number, because the mean of its divisors is an integer number (6061496).

Almost surely, 266676148 is an apocalyptic number.

It is an amenable number.

66676148 is an abundant number, since it is smaller than the sum of its proper divisors (78799756).

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

66676148 is a wasteful number, since it uses less digits than its factorization.

66676148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216503 (or 216501 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The square root of 66676148 is about 8165.5463993538. The cubic root of 66676148 is about 405.4993545885.

The spelling of 66676148 in words is "sixty-six million, six hundred seventy-six thousand, one hundred forty-eight".

Divisors: 1 2 4 7 11 14 22 28 44 77 154 308 216481 432962 865924 1515367 2381291 3030734 4762582 6061468 9525164 16669037 33338074 66676148