68015315 has 4 divisors (see below), whose sum is σ = 81618384. Its totient is φ = 54412248.

The previous prime is 68015279. The next prime is 68015327. The reversal of 68015315 is 51351086.

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

It is a cyclic number.

It is not a de Polignac number, because 68015315 - 2¹⁰ = 68014291 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6801527 + ... + 6801536.

It is an arithmetic number, because the mean of its divisors is an integer number (20404596).

Almost surely, 2^68015315 is an apocalyptic number.

68015315 is a deficient number, since it is larger than the sum of its proper divisors (13603069).

68015315 is a wasteful number, since it uses less digits than its factorization.

68015315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13603068.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 68015315 is about 8247.1398072301. The cubic root of 68015315 is about 408.1961503170.

The spelling of 68015315 in words is "sixty-eight million, fifteen thousand, three hundred fifteen".