68908087 has 4 divisors (see below), whose sum is σ = 69331000. Its totient is φ = 68485176.

The previous prime is 68908057. The next prime is 68908111. The reversal of 68908087 is 78080986.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78080986 = 2 ⋅39040493.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68908087 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 (68908027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211212 + ... + 211537.

It is an arithmetic number, because the mean of its divisors is an integer number (17332750).

Almost surely, 2^68908087 is an apocalyptic number.

68908087 is a deficient number, since it is larger than the sum of its proper divisors (422913).

68908087 is a wasteful number, since it uses less digits than its factorization.

68908087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422912.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 68908087 is about 8301.0895068057. The cubic root of 68908087 is about 409.9743926105.

The spelling of 68908087 in words is "sixty-eight million, nine hundred eight thousand, eighty-seven".