66478342 has 16 divisors (see below), whose sum is σ = 115407360. Its totient is φ = 28129608.

The previous prime is 66478333. The next prime is 66478393. The reversal of 66478342 is 24387466.

It is a happy number.

66478342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 66478295 and 66478304.

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, 28948 + ... + 31159.

It is an arithmetic number, because the mean of its divisors is an integer number (7212960).

Almost surely, 2^66478342 is an apocalyptic number.

66478342 is a deficient number, since it is larger than the sum of its proper divisors (48929018).

66478342 is a wasteful number, since it uses less digits than its factorization.

66478342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60195.

The product of its digits is 193536, while the sum is 40.

The square root of 66478342 is about 8153.4251698289. The cubic root of 66478342 is about 405.0979633977.

The spelling of 66478342 in words is "sixty-six million, four hundred seventy-eight thousand, three hundred forty-two".