75020066 has 32 divisors (see below), whose sum is σ = 128988288. Its totient is φ = 32391040.

The previous prime is 75020051. The next prime is 75020083. The reversal of 75020066 is 66002057.

It is a Curzon number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 87110 + ... + 87966.

It is an arithmetic number, because the mean of its divisors is an integer number (4030884).

Almost surely, 2^75020066 is an apocalyptic number.

75020066 is a deficient number, since it is larger than the sum of its proper divisors (53968222).

75020066 is a wasteful number, since it uses less digits than its factorization.

75020066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 75020066 is about 8661.4124714160. The cubic root of 75020066 is about 421.7539388970.

Subtracting from 75020066 its reverse (66002057), we obtain a square (9018009 = 3003²).

The spelling of 75020066 in words is "seventy-five million, twenty thousand, sixty-six".