68209871 has 8 divisors (see below), whose sum is σ = 69040224. Its totient is φ = 67384800.

The previous prime is 68209859. The next prime is 68209877. The reversal of 68209871 is 17890286.

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 68209871 - 2¹⁴ = 68193487 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 (68209877) 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, 28601 + ... + 30893.

It is an arithmetic number, because the mean of its divisors is an integer number (8630028).

Almost surely, 2^68209871 is an apocalyptic number.

68209871 is a deficient number, since it is larger than the sum of its proper divisors (830353).

68209871 is a wasteful number, since it uses less digits than its factorization.

68209871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2641.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 68209871 is about 8258.9267462546. The cubic root of 68209871 is about 408.5849912073.

The spelling of 68209871 in words is "sixty-eight million, two hundred nine thousand, eight hundred seventy-one".