66194432 has 44 divisors (see below), whose sum is σ = 133628160. Its totient is φ = 32772096.

The previous prime is 66194417. The next prime is 66194467. The reversal of 66194432 is 23449166.

It is a junction number, because it is equal to n+sod(n) for n = 66194392 and 66194401.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129794 + ... + 130302.

Almost surely, 2^66194432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66194432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66814080).

66194432 is an abundant number, since it is smaller than the sum of its proper divisors (67433728).

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

66194432 is a wasteful number, since it uses less digits than its factorization.

66194432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656 (or 638 counting only the distinct ones).

The product of its digits is 31104, while the sum is 35.

The square root of 66194432 is about 8135.9960668624. The cubic root of 66194432 is about 404.5204546142.

The spelling of 66194432 in words is "sixty-six million, one hundred ninety-four thousand, four hundred thirty-two".