75100066 has 8 divisors (see below), whose sum is σ = 112867884. Its totient is φ = 37477440.

The previous prime is 75100063. The next prime is 75100087. The reversal of 75100066 is 66000157.

It can be written as a sum of positive squares in 2 ways, for example, as 72743841 + 2356225 = 8529^2 + 1535^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 75100066.

It is not an unprimeable number, because it can be changed into a prime (75100061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34995 + ... + 37078.

Almost surely, 2^75100066 is an apocalyptic number.

75100066 is a deficient number, since it is larger than the sum of its proper divisors (37767818).

75100066 is a wasteful number, since it uses less digits than its factorization.

75100066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72596.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 75100066 is about 8666.0294252905. The cubic root of 75100066 is about 421.9038024853.

Subtracting from 75100066 its reverse (66000157), we obtain a palindrome (9099909).

The spelling of 75100066 in words is "seventy-five million, one hundred thousand, sixty-six".