75675209 has 2 divisors, whose sum is σ = 75675210. Its totient is φ = 75675208.

The previous prime is 75675203. The next prime is 75675241. The reversal of 75675209 is 90257657.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71031184 + 4644025 = 8428^2 + 2155^2 .

It is a cyclic number.

It is not a de Polignac number, because 75675209 - 2²⁰ = 74626633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75675203) 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, 37837604 + 37837605.

It is an arithmetic number, because the mean of its divisors is an integer number (37837605).

Almost surely, 2^75675209 is an apocalyptic number.

It is an amenable number.

75675209 is a deficient number, since it is larger than the sum of its proper divisors (1).

75675209 is an equidigital number, since it uses as much as digits as its factorization.

75675209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 132300, while the sum is 41.

The square root of 75675209 is about 8699.1499009961. The cubic root of 75675209 is about 422.9780944603.

The spelling of 75675209 in words is "seventy-five million, six hundred seventy-five thousand, two hundred nine".