66201773 has 8 divisors (see below), whose sum is σ = 72304896. Its totient is φ = 60112800.

The previous prime is 66201731. The next prime is 66201781. The reversal of 66201773 is 37710266.

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

It is not a de Polignac number, because 66201773 - 2¹⁰ = 66200749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66201703) 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, 7865 + ... + 13937.

It is an arithmetic number, because the mean of its divisors is an integer number (9038112).

Almost surely, 2^66201773 is an apocalyptic number.

It is an amenable number.

66201773 is a deficient number, since it is larger than the sum of its proper divisors (6103123).

66201773 is a wasteful number, since it uses less digits than its factorization.

66201773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7075.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 66201773 is about 8136.4471976410. The cubic root of 66201773 is about 404.5354079106.

The spelling of 66201773 in words is "sixty-six million, two hundred one thousand, seven hundred seventy-three".