66425214 has 8 divisors (see below), whose sum is σ = 132850440. Its totient is φ = 22141736.

The previous prime is 66425201. The next prime is 66425267. The reversal of 66425214 is 41252466.

It is a sphenic number, since it is the product of 3 distinct primes.

66425214 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5535429 + ... + 5535440.

It is an arithmetic number, because the mean of its divisors is an integer number (16606305).

Almost surely, 2^66425214 is an apocalyptic number.

66425214 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66425214 is a wasteful number, since it uses less digits than its factorization.

66425214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11070874.

The product of its digits is 11520, while the sum is 30.

The square root of 66425214 is about 8150.1665013667. The cubic root of 66425214 is about 404.9900195681.

It can be divided in two parts, 664 and 25214, that added together give a triangular number (25878 = T₂₂₇).

The spelling of 66425214 in words is "sixty-six million, four hundred twenty-five thousand, two hundred fourteen".