68008015 has 16 divisors (see below), whose sum is σ = 83795040. Its totient is φ = 52968960.

The previous prime is 68008009. The next prime is 68008021. The reversal of 68008015 is 51080086.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68008009) and next prime (68008021).

It is not a de Polignac number, because 68008015 - 2⁹ = 68007503 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 28675 + ... + 30955.

It is an arithmetic number, because the mean of its divisors is an integer number (5237190).

Almost surely, 2^68008015 is an apocalyptic number.

68008015 is a deficient number, since it is larger than the sum of its proper divisors (15787025).

68008015 is a wasteful number, since it uses less digits than its factorization.

68008015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 68008015 is about 8246.6972176745. The cubic root of 68008015 is about 408.1815460645.

The spelling of 68008015 in words is "sixty-eight million, eight thousand, fifteen".