215068633 has 4 divisors (see below), whose sum is σ = 231612388. Its totient is φ = 198524880.

The previous prime is 215068631. The next prime is 215068661. The reversal of 215068633 is 336860512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11235904 + 203832729 = 3352^2 + 14277^2 .

It is a cyclic number.

It is not a de Polignac number, because 215068633 - 2¹ = 215068631 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215068631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8271858 + ... + 8271883.

It is an arithmetic number, because the mean of its divisors is an integer number (57903097).

Almost surely, 2^215068633 is an apocalyptic number.

It is an amenable number.

215068633 is a deficient number, since it is larger than the sum of its proper divisors (16543755).

215068633 is a wasteful number, since it uses less digits than its factorization.

215068633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16543754.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 215068633 is about 14665.2184777452. The cubic root of 215068633 is about 599.1363806807.

The spelling of 215068633 in words is "two hundred fifteen million, sixty-eight thousand, six hundred thirty-three".