66206245 has 16 divisors (see below), whose sum is σ = 96139008. Its totient is φ = 42727680.

The previous prime is 66206233. The next prime is 66206263. The reversal of 66206245 is 54260266.

It is not a de Polignac number, because 66206245 - 2¹¹ = 66204197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55041 + ... + 56230.

It is an arithmetic number, because the mean of its divisors is an integer number (6008688).

Almost surely, 2^66206245 is an apocalyptic number.

It is an amenable number.

66206245 is a deficient number, since it is larger than the sum of its proper divisors (29932763).

66206245 is a wasteful number, since it uses less digits than its factorization.

66206245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111300.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 66206245 is about 8136.7220058203. The cubic root of 66206245 is about 404.5445166375.

The spelling of 66206245 in words is "sixty-six million, two hundred six thousand, two hundred forty-five".