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67030013 is a prime number
BaseRepresentation
bin1111111110110…
…0101111111101
311200010110220002
43333230233331
5114124430023
610352404045
71442513531
oct377545775
9150113802
1067030013
1134922706
121a546625
1310b6ba3b
148c8bbc1
155d40b28
hex3fecbfd

67030013 has 2 divisors, whose sum is σ = 67030014. Its totient is φ = 67030012.

The previous prime is 67029983. The next prime is 67030057. The reversal of 67030013 is 31003076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38278969 + 28751044 = 6187^2 + 5362^2 .

It is a cyclic number.

It is not a de Polignac number, because 67030013 - 210 = 67028989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67030063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33515006 + 33515007.

It is an arithmetic number, because the mean of its divisors is an integer number (33515007).

Almost surely, 267030013 is an apocalyptic number.

It is an amenable number.

67030013 is a deficient number, since it is larger than the sum of its proper divisors (1).

67030013 is an equidigital number, since it uses as much as digits as its factorization.

67030013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 67030013 is about 8187.1859023721. The cubic root of 67030013 is about 406.2154473808.

Adding to 67030013 its reverse (31003076), we get a palindrome (98033089).

The spelling of 67030013 in words is "sixty-seven million, thirty thousand, thirteen".