66030245 has 8 divisors (see below), whose sum is σ = 81968760. Its totient is φ = 51002560.

The previous prime is 66030233. The next prime is 66030269. The reversal of 66030245 is 54203066.

It can be written as a sum of positive squares in 4 ways, for example, as 776161 + 65254084 = 881^2 + 8078^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66030245 - 2⁴ = 66030229 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227546 + ... + 227835.

It is an arithmetic number, because the mean of its divisors is an integer number (10246095).

Almost surely, 2^66030245 is an apocalyptic number.

It is an amenable number.

66030245 is a deficient number, since it is larger than the sum of its proper divisors (15938515).

66030245 is a wasteful number, since it uses less digits than its factorization.

66030245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455415.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 66030245 is about 8125.8996425011. The cubic root of 66030245 is about 404.1857235969.

The spelling of 66030245 in words is "sixty-six million, thirty thousand, two hundred forty-five".