66754625 has 64 divisors (see below), whose sum is σ = 103514112. Its totient is φ = 41976000.

The previous prime is 66754621. The next prime is 66754627. The reversal of 66754625 is 52645766.

66754625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66754625 - 2² = 66754621 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66754621) 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 63 ways as a sum of consecutive naturals, for example, 623822 + ... + 623928.

It is an arithmetic number, because the mean of its divisors is an integer number (1617408).

Almost surely, 2^66754625 is an apocalyptic number.

It is an amenable number.

66754625 is a deficient number, since it is larger than the sum of its proper divisors (36759487).

66754625 is a wasteful number, since it uses less digits than its factorization.

66754625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 173 counting only the distinct ones).

The product of its digits is 302400, while the sum is 41.

The square root of 66754625 is about 8170.3503596847. The cubic root of 66754625 is about 405.6583814525.

The spelling of 66754625 in words is "sixty-six million, seven hundred fifty-four thousand, six hundred twenty-five".