66169245 has 16 divisors (see below), whose sum is σ = 106223040. Its totient is φ = 35172864.

The previous prime is 66169237. The next prime is 66169249. The reversal of 66169245 is 54296166.

It is not a de Polignac number, because 66169245 - 2³ = 66169237 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66169249) 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, 2580 + ... + 11789.

It is an arithmetic number, because the mean of its divisors is an integer number (6638940).

Almost surely, 2^66169245 is an apocalyptic number.

It is an amenable number.

66169245 is a deficient number, since it is larger than the sum of its proper divisors (40053795).

66169245 is a wasteful number, since it uses less digits than its factorization.

66169245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14684.

The product of its digits is 77760, while the sum is 39.

The square root of 66169245 is about 8134.4480451964. The cubic root of 66169245 is about 404.4691413898.

The spelling of 66169245 in words is "sixty-six million, one hundred sixty-nine thousand, two hundred forty-five".