66425364 has 18 divisors (see below), whose sum is σ = 167908650. Its totient is φ = 22141776.

The previous prime is 66425347. The next prime is 66425369. The reversal of 66425364 is 46352466.

66425364 is a `hidden beast` number, since 6 + 642 + 5 + 3 + 6 + 4 = 666.

66425364 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 61496964 + 4928400 = 7842^2 + 2220^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1845149 = 66425364 / (6 + 6 + 4 + 2 + 5 + 3 + 6 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66425369) 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 5 ways as a sum of consecutive naturals, for example, 922539 + ... + 922610.

Almost surely, 2^66425364 is an apocalyptic number.

It is an amenable number.

66425364 is an abundant number, since it is smaller than the sum of its proper divisors (101483286).

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

66425364 is a wasteful number, since it uses less digits than its factorization.

66425364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845159 (or 1845154 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 66425364 is about 8150.1757036275. The cubic root of 66425364 is about 404.9903244145.

The spelling of 66425364 in words is "sixty-six million, four hundred twenty-five thousand, three hundred sixty-four".