66060625 has 20 divisors (see below), whose sum is σ = 86909680. Its totient is φ = 50058000.

The previous prime is 66060611. The next prime is 66060629. The reversal of 66060625 is 52606066.

It is not a de Polignac number, because 66060625 - 2¹³ = 66052433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66060629) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9094 + ... + 14656.

It is an arithmetic number, because the mean of its divisors is an integer number (4345484).

Almost surely, 2^66060625 is an apocalyptic number.

It is an amenable number.

66060625 is a deficient number, since it is larger than the sum of its proper divisors (20849055).

66060625 is an equidigital number, since it uses as much as digits as its factorization.

66060625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5602 (or 5587 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 66060625 is about 8127.7687590138. The cubic root of 66060625 is about 404.2477016575.

The spelling of 66060625 in words is "sixty-six million, sixty thousand, six hundred twenty-five".