66000146 has 8 divisors (see below), whose sum is σ = 99665100. Its totient is φ = 32778448.

The previous prime is 66000083. The next prime is 66000149. The reversal of 66000146 is 64100066.

It can be written as a sum of positive squares in 2 ways, for example, as 46771921 + 19228225 = 6839^2 + 4385^2 .

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

It is a super-3 number, since 3×66000146³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (66000149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110441 + ... + 111036.

Almost surely, 2^66000146 is an apocalyptic number.

66000146 is a deficient number, since it is larger than the sum of its proper divisors (33664954).

66000146 is a wasteful number, since it uses less digits than its factorization.

66000146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221628.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 66000146 is about 8124.0473903098. The cubic root of 66000146 is about 404.1243000524.

The spelling of 66000146 in words is "sixty-six million, one hundred forty-six", and thus it is an aban number.