66377 has 2 divisors, whose sum is σ = 66378. Its totient is φ = 66376.
The previous prime is 66373. The next prime is 66383. The reversal of 66377 is 77366.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 65536 + 841 = 256^2 + 29^2 .
It is a cyclic number.
It is not a de Polignac number, because 66377 - 22 = 66373 is a prime.
It is a super-2 number, since 2×663772 = 8811812258, which contains 22 as substring.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (66373) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33188 + 33189.
It is an arithmetic number, because the mean of its divisors is an integer number (33189).
266377 is an apocalyptic number.
It is an amenable number.
66377 is a deficient number, since it is larger than the sum of its proper divisors (1).
66377 is an equidigital number, since it uses as much as digits as its factorization.
66377 is an evil number, because the sum of its binary digits is even.
The product of its digits is 5292, while the sum is 29.
The square root of 66377 is about 257.6373420139. The cubic root of 66377 is about 40.4892010023.
The spelling of 66377 in words is "sixty-six thousand, three hundred seventy-seven".
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