75000066 has 16 divisors (see below), whose sum is σ = 151377600. Its totient is φ = 24770448.

The previous prime is 75000047. The next prime is 75000071. The reversal of 75000066 is 66000057.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56686 + ... + 57993.

It is an arithmetic number, because the mean of its divisors is an integer number (9461100).

Almost surely, 2^75000066 is an apocalyptic number.

75000066 is an abundant number, since it is smaller than the sum of its proper divisors (76377534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75000066 is a wasteful number, since it uses less digits than its factorization.

75000066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114793.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 75000066 is about 8660.2578483553. The cubic root of 75000066 is about 421.7164563543.

Subtracting from 75000066 its reverse (66000057), we obtain a palindrome (9000009).

The spelling of 75000066 in words is "seventy-five million, sixty-six", and thus it is an aban number and an uban number.