68510087 has 4 divisors (see below), whose sum is σ = 68553576. Its totient is φ = 68466600.

The previous prime is 68510081. The next prime is 68510111. The reversal of 68510087 is 78001586.

It is a happy number.

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 68510087 - 2¹² = 68505991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68510081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19289 + ... + 22562.

It is an arithmetic number, because the mean of its divisors is an integer number (17138394).

Almost surely, 2^68510087 is an apocalyptic number.

68510087 is a deficient number, since it is larger than the sum of its proper divisors (43489).

68510087 is a wasteful number, since it uses less digits than its factorization.

68510087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43488.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 68510087 is about 8277.0820341471. The cubic root of 68510087 is about 409.1835567148.

The spelling of 68510087 in words is "sixty-eight million, five hundred ten thousand, eighty-seven".