68618087 has 8 divisors (see below), whose sum is σ = 69679872. Its totient is φ = 67564000.

The previous prime is 68618083. The next prime is 68618113. The reversal of 68618087 is 78081686.

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

It is a cyclic number.

It is not a de Polignac number, because 68618087 - 2² = 68618083 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 (68618083) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17513 + ... + 21069.

It is an arithmetic number, because the mean of its divisors is an integer number (8709984).

Almost surely, 2^68618087 is an apocalyptic number.

68618087 is a deficient number, since it is larger than the sum of its proper divisors (1061785).

68618087 is a wasteful number, since it uses less digits than its factorization.

68618087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3849.

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 68618087 is about 8283.6035033070. The cubic root of 68618087 is about 409.3984575413.

The spelling of 68618087 in words is "sixty-eight million, six hundred eighteen thousand, eighty-seven".