66974196 has 24 divisors (see below), whose sum is σ = 157659264. Its totient is φ = 22126720.

The previous prime is 66974153. The next prime is 66974207. The reversal of 66974196 is 69147966.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23340 + ... + 26051.

It is an arithmetic number, because the mean of its divisors is an integer number (6569136).

Almost surely, 2^66974196 is an apocalyptic number.

It is an amenable number.

66974196 is an abundant number, since it is smaller than the sum of its proper divisors (90685068).

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

66974196 is a wasteful number, since it uses less digits than its factorization.

66974196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49511 (or 49509 counting only the distinct ones).

The product of its digits is 489888, while the sum is 48.

The square root of 66974196 is about 8183.7763899070. The cubic root of 66974196 is about 406.1026619627.

The spelling of 66974196 in words is "sixty-six million, nine hundred seventy-four thousand, one hundred ninety-six".