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66635343 = 327403927
BaseRepresentation
bin1111111000110…
…0011001001111
311122101102111200
43332030121033
5114024312333
610340120543
71436251065
oct376143117
9148342450
1066635343
1134683135
121a396153
1310a611c8
148bc8035
155cb3c13
hex3f8c64f

66635343 has 6 divisors (see below), whose sum is σ = 96251064. Its totient is φ = 44423556.

The previous prime is 66635341. The next prime is 66635357. The reversal of 66635343 is 34353666.

It is a happy number.

It is not a de Polignac number, because 66635343 - 21 = 66635341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66635298 and 66635307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66635341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3701955 + ... + 3701972.

It is an arithmetic number, because the mean of its divisors is an integer number (16041844).

Almost surely, 266635343 is an apocalyptic number.

66635343 is a deficient number, since it is larger than the sum of its proper divisors (29615721).

66635343 is a wasteful number, since it uses less digits than its factorization.

66635343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7403933 (or 7403930 counting only the distinct ones).

The product of its digits is 116640, while the sum is 36.

The square root of 66635343 is about 8163.0474089031. The cubic root of 66635343 is about 405.4166174668.

The spelling of 66635343 in words is "sixty-six million, six hundred thirty-five thousand, three hundred forty-three".

Divisors: 1 3 9 7403927 22211781 66635343