68871009 has 8 divisors (see below), whose sum is σ = 93560832. Its totient is φ = 45047600.

The previous prime is 68871007. The next prime is 68871017. The reversal of 68871009 is 90017886.

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 68871009 - 2¹ = 68871007 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68871001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216417 + ... + 216734.

It is an arithmetic number, because the mean of its divisors is an integer number (11695104).

Almost surely, 2^68871009 is an apocalyptic number.

It is an amenable number.

68871009 is a deficient number, since it is larger than the sum of its proper divisors (24689823).

68871009 is a wasteful number, since it uses less digits than its factorization.

68871009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433207.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 68871009 is about 8298.8558850001. The cubic root of 68871009 is about 409.9008465365.

The spelling of 68871009 in words is "sixty-eight million, eight hundred seventy-one thousand, nine".