75136666 has 8 divisors (see below), whose sum is σ = 122950944. Its totient is φ = 34153020.

The previous prime is 75136657. The next prime is 75136679. The reversal of 75136666 is 66663157.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1707630 + ... + 1707673.

It is an arithmetic number, because the mean of its divisors is an integer number (15368868).

Almost surely, 2^75136666 is an apocalyptic number.

75136666 is a deficient number, since it is larger than the sum of its proper divisors (47814278).

75136666 is a wasteful number, since it uses less digits than its factorization.

75136666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3415316.

The product of its digits is 136080, while the sum is 40.

The square root of 75136666 is about 8668.1408617996. The cubic root of 75136666 is about 421.9723295948.

The spelling of 75136666 in words is "seventy-five million, one hundred thirty-six thousand, six hundred sixty-six".