68514209 has 4 divisors (see below), whose sum is σ = 72120240. Its totient is φ = 64908180.

The previous prime is 68514169. The next prime is 68514221. The reversal of 68514209 is 90241586.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-68514209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68514289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1802987 + ... + 1803024.

It is an arithmetic number, because the mean of its divisors is an integer number (18030060).

Almost surely, 2^68514209 is an apocalyptic number.

It is an amenable number.

68514209 is a deficient number, since it is larger than the sum of its proper divisors (3606031).

68514209 is a wasteful number, since it uses less digits than its factorization.

68514209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3606030.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 68514209 is about 8277.3310311960. The cubic root of 68514209 is about 409.1917629068.

The spelling of 68514209 in words is "sixty-eight million, five hundred fourteen thousand, two hundred nine".