220068515 has 4 divisors (see below), whose sum is σ = 264082224. Its totient is φ = 176054808.

The previous prime is 220068509. The next prime is 220068529. The reversal of 220068515 is 515860022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 515860022 = 2 ⋅257930011.

It is a cyclic number.

It is not a de Polignac number, because 220068515 - 2⁸ = 220068259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 22006847 + ... + 22006856.

It is an arithmetic number, because the mean of its divisors is an integer number (66020556).

Almost surely, 2^220068515 is an apocalyptic number.

220068515 is a deficient number, since it is larger than the sum of its proper divisors (44013709).

220068515 is an equidigital number, since it uses as much as digits as its factorization.

220068515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44013708.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 220068515 is about 14834.7064345743. The cubic root of 220068515 is about 603.7437356734.

The spelling of 220068515 in words is "two hundred twenty million, sixty-eight thousand, five hundred fifteen".