66194230 has 16 divisors (see below), whose sum is σ = 124330464. Its totient is φ = 25326400.

The previous prime is 66194203. The next prime is 66194239. The reversal of 66194230 is 3249166.

It is a junction number, because it is equal to n+sod(n) for n = 66194192 and 66194201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66194239) 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, 143671 + ... + 144130.

It is an arithmetic number, because the mean of its divisors is an integer number (7770654).

Almost surely, 2^66194230 is an apocalyptic number.

66194230 is a deficient number, since it is larger than the sum of its proper divisors (58136234).

66194230 is a wasteful number, since it uses less digits than its factorization.

66194230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287831.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 66194230 is about 8135.9836528843. The cubic root of 66194230 is about 404.5200431334.

The spelling of 66194230 in words is "sixty-six million, one hundred ninety-four thousand, two hundred thirty".