11642387 has 2 divisors, whose sum is σ = 11642388. Its totient is φ = 11642386.
The previous prime is 11642377. The next prime is 11642419. The reversal of 11642387 is 78324611.
It is an a-pointer prime, because the next prime (11642419) can be obtained adding 11642387 to its sum of digits (32).
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 11642387 - 214 = 11626003 is a prime.
It is not a weakly prime, because it can be changed into another prime (11642377) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5821193 + 5821194.
It is an arithmetic number, because the mean of its divisors is an integer number (5821194).
Almost surely, 211642387 is an apocalyptic number.
11642387 is a deficient number, since it is larger than the sum of its proper divisors (1).
11642387 is an equidigital number, since it uses as much as digits as its factorization.
11642387 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 8064, while the sum is 32.
The square root of 11642387 is about 3412.0942249592. The cubic root of 11642387 is about 226.6456268918.
Adding to 11642387 its reverse (78324611), we get a palindrome (89966998).
The spelling of 11642387 in words is "eleven million, six hundred forty-two thousand, three hundred eighty-seven".
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