66415196 has 6 divisors (see below), whose sum is σ = 116226600. Its totient is φ = 33207596.

The previous prime is 66415187. The next prime is 66415199. The reversal of 66415196 is 69151466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66415199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8301896 + ... + 8301903.

It is an arithmetic number, because the mean of its divisors is an integer number (19371100).

Almost surely, 2^66415196 is an apocalyptic number.

It is an amenable number.

66415196 is a deficient number, since it is larger than the sum of its proper divisors (49811404).

66415196 is a wasteful number, since it uses less digits than its factorization.

66415196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16603803 (or 16603801 counting only the distinct ones).

The product of its digits is 38880, while the sum is 38.

The square root of 66415196 is about 8149.5518895213. The cubic root of 66415196 is about 404.9696588559.

The spelling of 66415196 in words is "sixty-six million, four hundred fifteen thousand, one hundred ninety-six".