68308487 has 4 divisors (see below), whose sum is σ = 73563000. Its totient is φ = 63053976.

The previous prime is 68308483. The next prime is 68308517. The reversal of 68308487 is 78480386.

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 68308487 - 2² = 68308483 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 (68308483) 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, 2627237 + ... + 2627262.

It is an arithmetic number, because the mean of its divisors is an integer number (18390750).

Almost surely, 2^68308487 is an apocalyptic number.

68308487 is a deficient number, since it is larger than the sum of its proper divisors (5254513).

68308487 is a wasteful number, since it uses less digits than its factorization.

68308487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5254512.

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 68308487 is about 8264.8948571655. The cubic root of 68308487 is about 408.7818034589.

The spelling of 68308487 in words is "sixty-eight million, three hundred eight thousand, four hundred eighty-seven".