215066245 has 8 divisors (see below), whose sum is σ = 260112384. Its totient is φ = 170697744.

The previous prime is 215066239. The next prime is 215066273. The reversal of 215066245 is 542660512.

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

It is a cyclic number.

It is not a de Polignac number, because 215066245 - 2⁵ = 215066213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168709 + ... + 169978.

It is an arithmetic number, because the mean of its divisors is an integer number (32514048).

Almost surely, 2^215066245 is an apocalyptic number.

It is an amenable number.

215066245 is a deficient number, since it is larger than the sum of its proper divisors (45046139).

215066245 is a wasteful number, since it uses less digits than its factorization.

215066245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338819.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 215066245 is about 14665.1370603892. The cubic root of 215066245 is about 599.1341631824.

The spelling of 215066245 in words is "two hundred fifteen million, sixty-six thousand, two hundred forty-five".