75136066 has 4 divisors (see below), whose sum is σ = 112704102. Its totient is φ = 37568032.

The previous prime is 75136063. The next prime is 75136069. The reversal of 75136066 is 66063157.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66063157 = 71 ⋅930467.

It is an interprime number because it is at equal distance from previous prime (75136063) and next prime (75136069).

It can be written as a sum of positive squares in only one way, i.e., 61230625 + 13905441 = 7825^2 + 3729^2 .

It is not an unprimeable number, because it can be changed into a prime (75136063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18784015 + ... + 18784018.

Almost surely, 2^75136066 is an apocalyptic number.

75136066 is a deficient number, since it is larger than the sum of its proper divisors (37568036).

75136066 is a wasteful number, since it uses less digits than its factorization.

75136066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37568035.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 75136066 is about 8668.1062522330. The cubic root of 75136066 is about 421.9712063790.

The spelling of 75136066 in words is "seventy-five million, one hundred thirty-six thousand, sixty-six".