66163340 has 24 divisors (see below), whose sum is σ = 142333632. Its totient is φ = 25819520.

The previous prime is 66163313. The next prime is 66163351. The reversal of 66163340 is 4336166.

66163340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39524 + ... + 41163.

It is an arithmetic number, because the mean of its divisors is an integer number (5930568).

Almost surely, 2^66163340 is an apocalyptic number.

It is an amenable number.

66163340 is an abundant number, since it is smaller than the sum of its proper divisors (76170292).

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

66163340 is a wasteful number, since it uses less digits than its factorization.

66163340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80737 (or 80735 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 66163340 is about 8134.0850745490. The cubic root of 66163340 is about 404.4571093079.

The spelling of 66163340 in words is "sixty-six million, one hundred sixty-three thousand, three hundred forty".