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207406481 is a prime number
BaseRepresentation
bin11000101110011…
…00010110010001
3112110021100012112
430113030112101
5411044001411
632325235105
75065632422
oct1427142621
9473240175
10207406481
11a7091617
1259562a95
1333c7b539
141d78d649
151331db8b
hexc5cc591

207406481 has 2 divisors, whose sum is σ = 207406482. Its totient is φ = 207406480.

The previous prime is 207406469. The next prime is 207406483. The reversal of 207406481 is 184604702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173580625 + 33825856 = 13175^2 + 5816^2 .

It is a cyclic number.

It is not a de Polignac number, because 207406481 - 214 = 207390097 is a prime.

It is a super-2 number, since 2×2074064812 = 86034896721606722, which contains 22 as substring.

Together with 207406483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (207406483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103703240 + 103703241.

It is an arithmetic number, because the mean of its divisors is an integer number (103703241).

Almost surely, 2207406481 is an apocalyptic number.

It is an amenable number.

207406481 is a deficient number, since it is larger than the sum of its proper divisors (1).

207406481 is an equidigital number, since it uses as much as digits as its factorization.

207406481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 207406481 is about 14401.6138331786. The cubic root of 207406481 is about 591.9351198452.

The spelling of 207406481 in words is "two hundred seven million, four hundred six thousand, four hundred eighty-one".