66401304 has 32 divisors (see below), whose sum is σ = 170054640. Its totient is φ = 21593600.

The previous prime is 66401267. The next prime is 66401323. The reversal of 66401304 is 40310466.

66401304 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 32757 + ... + 34724.

Almost surely, 2^66401304 is an apocalyptic number.

It is an amenable number.

66401304 is an abundant number, since it is smaller than the sum of its proper divisors (103653336).

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

66401304 is a wasteful number, since it uses less digits than its factorization.

66401304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67531 (or 67527 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 66401304 is about 8148.6995281456. The cubic root of 66401304 is about 404.9414211877.

The spelling of 66401304 in words is "sixty-six million, four hundred one thousand, three hundred four".