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66318701 is a prime number
BaseRepresentation
bin1111110011111…
…1000101101101
311121210100011012
43330333011231
5113434144301
610325235005
71433461661
oct374770555
9147710135
1066318701
1134487249
121a262a65
1310980047
148b448a1
155c4eebb
hex3f3f16d

66318701 has 2 divisors, whose sum is σ = 66318702. Its totient is φ = 66318700.

The previous prime is 66318697. The next prime is 66318709. The reversal of 66318701 is 10781366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48636676 + 17682025 = 6974^2 + 4205^2 .

It is a cyclic number.

It is not a de Polignac number, because 66318701 - 22 = 66318697 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66318709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33159350 + 33159351.

It is an arithmetic number, because the mean of its divisors is an integer number (33159351).

Almost surely, 266318701 is an apocalyptic number.

It is an amenable number.

66318701 is a deficient number, since it is larger than the sum of its proper divisors (1).

66318701 is an equidigital number, since it uses as much as digits as its factorization.

66318701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 66318701 is about 8143.6294733982. The cubic root of 66318701 is about 404.7734362532.

The spelling of 66318701 in words is "sixty-six million, three hundred eighteen thousand, seven hundred one".