75166643 has 2 divisors, whose sum is σ = 75166644. Its totient is φ = 75166642.

The previous prime is 75166591. The next prime is 75166681. The reversal of 75166643 is 34666157.

It is a happy number.

It is an a-pointer prime, because the next prime (75166681) can be obtained adding 75166643 to its sum of digits (38).

It is a strong prime.

It is an emirp because it is prime and its reverse (34666157) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75166643 - 2¹⁴ = 75150259 is a prime.

It is a super-3 number, since 3×75166643³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 75166597 and 75166606.

It is not a weakly prime, because it can be changed into another prime (75166043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37583321 + 37583322.

It is an arithmetic number, because the mean of its divisors is an integer number (37583322).

Almost surely, 2^75166643 is an apocalyptic number.

75166643 is a deficient number, since it is larger than the sum of its proper divisors (1).

75166643 is an equidigital number, since it uses as much as digits as its factorization.

75166643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 38.

The square root of 75166643 is about 8669.8698375466. The cubic root of 75166643 is about 422.0284397176.

The spelling of 75166643 in words is "seventy-five million, one hundred sixty-six thousand, six hundred forty-three".