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66241707 = 3717185551
BaseRepresentation
bin1111110010110…
…0010010101011
311121122102112120
43330230102223
5113424213312
610323442323
71433021340
oct374542253
9147572476
1066241707
1134434414
121a2263a3
1310953c9c
148b247c7
155c3728c
hex3f2c4ab

66241707 has 16 divisors (see below), whose sum is σ = 106877952. Its totient is φ = 35625600.

The previous prime is 66241687. The next prime is 66241709. The reversal of 66241707 is 70714266.

It is not a de Polignac number, because 66241707 - 211 = 66239659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66241709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92419 + ... + 93132.

It is an arithmetic number, because the mean of its divisors is an integer number (6679872).

Almost surely, 266241707 is an apocalyptic number.

66241707 is a deficient number, since it is larger than the sum of its proper divisors (40636245).

66241707 is a wasteful number, since it uses less digits than its factorization.

66241707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185578.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 66241707 is about 8138.9008471660. The cubic root of 66241707 is about 404.6167323680.

The spelling of 66241707 in words is "sixty-six million, two hundred forty-one thousand, seven hundred seven".

Divisors: 1 3 7 17 21 51 119 357 185551 556653 1298857 3154367 3896571 9463101 22080569 66241707