68515 has 8 divisors (see below), whose sum is σ = 83808. Its totient is φ = 53760.

The previous prime is 68507. The next prime is 68521. The reversal of 68515 is 51586.

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

It is not a de Polignac number, because 68515 - 2³ = 68507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68515.

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, 259 + ... + 451.

It is an arithmetic number, because the mean of its divisors is an integer number (10476).

2⁶⁸⁵¹⁵ is an apocalyptic number.

68515 is a deficient number, since it is larger than the sum of its proper divisors (15293).

68515 is a wasteful number, since it uses less digits than its factorization.

68515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269.

The product of its digits is 1200, while the sum is 25.

The square root of 68515 is about 261.7537010245. The cubic root of 68515 is about 40.9193337614.

The spelling of 68515 in words is "sixty-eight thousand, five hundred fifteen".