66740316 has 12 divisors (see below), whose sum is σ = 155727432. Its totient is φ = 22246768.

The previous prime is 66740309. The next prime is 66740327. The reversal of 66740316 is 61304766.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 2780835 + ... + 2780858.

It is an arithmetic number, because the mean of its divisors is an integer number (12977286).

Almost surely, 2^66740316 is an apocalyptic number.

It is an amenable number.

66740316 is an abundant number, since it is smaller than the sum of its proper divisors (88987116).

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

66740316 is a wasteful number, since it uses less digits than its factorization.

66740316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5561700 (or 5561698 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 66740316 is about 8169.4746465119. The cubic root of 66740316 is about 405.6293947940.

The spelling of 66740316 in words is "sixty-six million, seven hundred forty thousand, three hundred sixteen".