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66514716 = 22333119867
BaseRepresentation
bin1111110110111…
…0111100011100
311122011022001000
43331232330130
5114011432331
610333350300
71435236312
oct375567434
9148138030
1066514716
1134600544
121a338390
1310a1b328
148b960b2
155c8d0e6
hex3f6ef1c

66514716 has 48 divisors (see below), whose sum is σ = 178017280. Its totient is φ = 21455280.

The previous prime is 66514703. The next prime is 66514739. The reversal of 66514716 is 61741566.

It is a super-3 number, since 3×665147163 (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 6586 + ... + 13281.

Almost surely, 266514716 is an apocalyptic number.

It is an amenable number.

66514716 is an abundant number, since it is smaller than the sum of its proper divisors (111502564).

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

66514716 is a wasteful number, since it uses less digits than its factorization.

66514716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19911 (or 19903 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 66514716 is about 8155.6554610896. The cubic root of 66514716 is about 405.1718338054.

The spelling of 66514716 in words is "sixty-six million, five hundred fourteen thousand, seven hundred sixteen".

Divisors: 1 2 3 4 6 9 12 18 27 31 36 54 62 93 108 124 186 279 372 558 837 1116 1674 3348 19867 39734 59601 79468 119202 178803 238404 357606 536409 615877 715212 1072818 1231754 1847631 2145636 2463508 3695262 5542893 7390524 11085786 16628679 22171572 33257358 66514716