66396460 has 24 divisors (see below), whose sum is σ = 150158736. Its totient is φ = 24515520.

The previous prime is 66396443. The next prime is 66396467. The reversal of 66396460 is 6469366.

66396460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (66396467) by changing a digit.

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, 127426 + ... + 127945.

It is an arithmetic number, because the mean of its divisors is an integer number (6256614).

Almost surely, 2^66396460 is an apocalyptic number.

It is an amenable number.

66396460 is an abundant number, since it is smaller than the sum of its proper divisors (83762276).

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

66396460 is a wasteful number, since it uses less digits than its factorization.

66396460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255393 (or 255391 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 40.

The square root of 66396460 is about 8148.4022973832. The cubic root of 66396460 is about 404.9315740722.

The spelling of 66396460 in words is "sixty-six million, three hundred ninety-six thousand, four hundred sixty".