66754085 has 8 divisors (see below), whose sum is σ = 82867320. Its totient is φ = 51561664.

The previous prime is 66754081. The next prime is 66754091. The reversal of 66754085 is 58045766.

It can be written as a sum of positive squares in 4 ways, for example, as 3996001 + 62758084 = 1999^2 + 7922^2 .

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 66754085 - 2² = 66754081 is a prime.

It is a super-2 number, since 2×66754085² = 8912215728374450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66754081) 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, 230042 + ... + 230331.

It is an arithmetic number, because the mean of its divisors is an integer number (10358415).

Almost surely, 2^66754085 is an apocalyptic number.

It is an amenable number.

66754085 is a deficient number, since it is larger than the sum of its proper divisors (16113235).

66754085 is a wasteful number, since it uses less digits than its factorization.

66754085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460407.

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 66754085 is about 8170.3173132994. The cubic root of 66754085 is about 405.6572876151.

The spelling of 66754085 in words is "sixty-six million, seven hundred fifty-four thousand, eighty-five".