66025044 has 36 divisors (see below), whose sum is σ = 173080544. Its totient is φ = 22008024.

The previous prime is 66025039. The next prime is 66025061. The reversal of 66025044 is 44052066.

It is a happy number.

66025044 is a `hidden beast` number, since 6 + 602 + 50 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 66024999 and 66025017.

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 11 ways as a sum of consecutive naturals, for example, 32992 + ... + 34935.

Almost surely, 2^66025044 is an apocalyptic number.

It is an amenable number.

66025044 is an abundant number, since it is smaller than the sum of its proper divisors (107055500).

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

66025044 is a wasteful number, since it uses less digits than its factorization.

66025044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67946 (or 67932 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 66025044 is about 8125.5796100955. The cubic root of 66025044 is about 404.1751111614.

The spelling of 66025044 in words is "sixty-six million, twenty-five thousand, forty-four".