Search a number
-
+
66386769 = 337598079
BaseRepresentation
bin1111110100111…
…1101101010001
311121220210112020
43331033231101
5113443334034
610330522053
71434164301
oct375175521
9147823466
1066386769
11345233a9
121a296329
13109a5017
148b61601
155c65249
hex3f4fb51

66386769 has 8 divisors (see below), whose sum is σ = 90908160. Its totient is φ = 43061616.

The previous prime is 66386767. The next prime is 66386773. The reversal of 66386769 is 96768366.

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

It is not a de Polignac number, because 66386769 - 21 = 66386767 is a prime.

It is a super-2 number, since 2×663867692 = 8814406196518722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (66386767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298929 + ... + 299150.

It is an arithmetic number, because the mean of its divisors is an integer number (11363520).

Almost surely, 266386769 is an apocalyptic number.

It is an amenable number.

66386769 is a deficient number, since it is larger than the sum of its proper divisors (24521391).

66386769 is a wasteful number, since it uses less digits than its factorization.

66386769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598119.

The product of its digits is 1959552, while the sum is 51.

The square root of 66386769 is about 8147.8076192311. The cubic root of 66386769 is about 404.9118723048.

The spelling of 66386769 in words is "sixty-six million, three hundred eighty-six thousand, seven hundred sixty-nine".

Divisors: 1 3 37 111 598079 1794237 22128923 66386769