75666773 has 8 divisors (see below), whose sum is σ = 93128448. Its totient is φ = 59868144.

The previous prime is 75666761. The next prime is 75666781. The reversal of 75666773 is 37766657.

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

It is not a de Polignac number, because 75666773 - 2¹⁰ = 75665749 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75666373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415661 + ... + 415842.

It is an arithmetic number, because the mean of its divisors is an integer number (11641056).

Almost surely, 2^75666773 is an apocalyptic number.

It is an amenable number.

75666773 is a deficient number, since it is larger than the sum of its proper divisors (17461675).

75666773 is a wasteful number, since it uses less digits than its factorization.

75666773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831523.

The product of its digits is 1111320, while the sum is 47.

The square root of 75666773 is about 8698.6650125177. The cubic root of 75666773 is about 422.9623765176.

The spelling of 75666773 in words is "seventy-five million, six hundred sixty-six thousand, seven hundred seventy-three".