66073625 has 16 divisors (see below), whose sum is σ = 83516160. Its totient is φ = 52182000.

The previous prime is 66073619. The next prime is 66073627. The reversal of 66073625 is 52637066.

It is not a de Polignac number, because 66073625 - 2¹⁴ = 66057241 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66073627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6530 + ... + 13220.

It is an arithmetic number, because the mean of its divisors is an integer number (5219760).

Almost surely, 2^66073625 is an apocalyptic number.

It is an amenable number.

66073625 is a deficient number, since it is larger than the sum of its proper divisors (17442535).

66073625 is an equidigital number, since it uses as much as digits as its factorization.

66073625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6785 (or 6775 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 66073625 is about 8128.5684471498. The cubic root of 66073625 is about 404.2742170764.

The spelling of 66073625 in words is "sixty-six million, seventy-three thousand, six hundred twenty-five".