666575773 has 8 divisors (see below), whose sum is σ = 673704000. Its totient is φ = 659485728.

The previous prime is 666575771. The next prime is 666575779. The reversal of 666575773 is 377575666.

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

It is a cyclic number.

It is not a de Polignac number, because 666575773 - 2¹ = 666575771 is a prime.

It is a super-2 number, since 2×666575773² = 888646522301095058, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 666575773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666575771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26265 + ... + 44977.

It is an arithmetic number, because the mean of its divisors is an integer number (84213000).

Almost surely, 2^666575773 is an apocalyptic number.

It is an amenable number.

666575773 is a deficient number, since it is larger than the sum of its proper divisors (7128227).

666575773 is a wasteful number, since it uses less digits than its factorization.

666575773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19091.

The product of its digits is 5556600, while the sum is 52.

The square root of 666575773 is about 25818.1287664308. The cubic root of 666575773 is about 873.5407614661.

The spelling of 666575773 in words is "six hundred sixty-six million, five hundred seventy-five thousand, seven hundred seventy-three".