68419209 has 16 divisors (see below), whose sum is σ = 96219200. Its totient is φ = 43125696.

The previous prime is 68419193. The next prime is 68419213. The reversal of 68419209 is 90291486.

It is not a de Polignac number, because 68419209 - 2⁴ = 68419193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68419229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39567 + ... + 41259.

It is an arithmetic number, because the mean of its divisors is an integer number (6013700).

Almost surely, 2^68419209 is an apocalyptic number.

It is an amenable number.

68419209 is a deficient number, since it is larger than the sum of its proper divisors (27799991).

68419209 is a wasteful number, since it uses less digits than its factorization.

68419209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 68419209 is about 8271.5904758396. The cubic root of 68419209 is about 409.0025505826.

The spelling of 68419209 in words is "sixty-eight million, four hundred nineteen thousand, two hundred nine".