68872809 has 8 divisors (see below), whose sum is σ = 92740032. Its totient is φ = 45460400.

The previous prime is 68872807. The next prime is 68872823. The reversal of 68872809 is 90827886.

It is a happy number.

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 68872809 - 2¹ = 68872807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68872807) 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, 113349 + ... + 113954.

It is an arithmetic number, because the mean of its divisors is an integer number (11592504).

Almost surely, 2^68872809 is an apocalyptic number.

It is an amenable number.

68872809 is a deficient number, since it is larger than the sum of its proper divisors (23867223).

68872809 is a wasteful number, since it uses less digits than its factorization.

68872809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227407.

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 68872809 is about 8298.9643329755. The cubic root of 68872809 is about 409.9044175364.

The spelling of 68872809 in words is "sixty-eight million, eight hundred seventy-two thousand, eight hundred nine".