66125608 has 8 divisors (see below), whose sum is σ = 123985530. Its totient is φ = 33062800.

The previous prime is 66125603. The next prime is 66125639. The reversal of 66125608 is 80652166.

It can be written as a sum of positive squares in only one way, i.e., 54140164 + 11985444 = 7358^2 + 3462^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (66125603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4132843 + ... + 4132858.

Almost surely, 2^66125608 is an apocalyptic number.

It is an amenable number.

66125608 is a deficient number, since it is larger than the sum of its proper divisors (57859922).

66125608 is a wasteful number, since it uses less digits than its factorization.

66125608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8265707 (or 8265703 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 66125608 is about 8131.7653679874. The cubic root of 66125608 is about 404.3802093328.

The spelling of 66125608 in words is "sixty-six million, one hundred twenty-five thousand, six hundred eight".