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66542076 = 223215112241
BaseRepresentation
bin1111110111010…
…1100111111100
311122012200120100
43331311213330
5114013321301
610334121100
71435412136
oct375654774
9148180510
1066542076
113461a057
121a350190
1310a2a913
148ba2056
155c96286
hex3f759fc

66542076 has 36 divisors (see below), whose sum is σ = 169331344. Its totient is φ = 22032000.

The previous prime is 66542053. The next prime is 66542093. The reversal of 66542076 is 67024566.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a self number, because there is not a number n which added to its sum of digits gives 66542076.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 685 + ... + 11556.

Almost surely, 266542076 is an apocalyptic number.

It is an amenable number.

66542076 is an abundant number, since it is smaller than the sum of its proper divisors (102789268).

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

66542076 is a wasteful number, since it uses less digits than its factorization.

66542076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12402 (or 12397 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 66542076 is about 8157.3326522829. The cubic root of 66542076 is about 405.2273803191.

The spelling of 66542076 in words is "sixty-six million, five hundred forty-two thousand, seventy-six".

Divisors: 1 2 3 4 6 9 12 18 36 151 302 453 604 906 1359 1812 2718 5436 12241 24482 36723 48964 73446 110169 146892 220338 440676 1848391 3696782 5545173 7393564 11090346 16635519 22180692 33271038 66542076