68462209 has 2 divisors, whose sum is σ = 68462210. Its totient is φ = 68462208.

The previous prime is 68462203. The next prime is 68462227. The reversal of 68462209 is 90226486.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58476609 + 9985600 = 7647^2 + 3160^2 .

It is a cyclic number.

It is not a de Polignac number, because 68462209 - 2³ = 68462201 is a prime.

It is a super-2 number, since 2×68462209² = 9374148122319362, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68462201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34231104 + 34231105.

It is an arithmetic number, because the mean of its divisors is an integer number (34231105).

Almost surely, 2^68462209 is an apocalyptic number.

It is an amenable number.

68462209 is a deficient number, since it is larger than the sum of its proper divisors (1).

68462209 is an equidigital number, since it uses as much as digits as its factorization.

68462209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 68462209 is about 8274.1893258494. The cubic root of 68462209 is about 409.0882157383.

The spelling of 68462209 in words is "sixty-eight million, four hundred sixty-two thousand, two hundred nine".