66630234 has 64 divisors (see below), whose sum is σ = 150543360. Its totient is φ = 19488000.

The previous prime is 66630233. The next prime is 66630269. The reversal of 66630234 is 43203666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66630233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 276354 + ... + 276594.

It is an arithmetic number, because the mean of its divisors is an integer number (2352240).

Almost surely, 2^66630234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66630234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75271680).

66630234 is an abundant number, since it is smaller than the sum of its proper divisors (83913126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66630234 is a wasteful number, since it uses less digits than its factorization.

66630234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387.

The product of its (nonzero) digits is 15552, while the sum is 30.

The square root of 66630234 is about 8162.7344683017. The cubic root of 66630234 is about 405.4062559663.

The spelling of 66630234 in words is "sixty-six million, six hundred thirty thousand, two hundred thirty-four".