68954009 has 2 divisors, whose sum is σ = 68954010. Its totient is φ = 68954008.

The previous prime is 68953991. The next prime is 68954033. The reversal of 68954009 is 90045986.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68890000 + 64009 = 8300^2 + 253^2 .

It is a cyclic number.

It is not a de Polignac number, because 68954009 - 2¹² = 68949913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68954089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34477004 + 34477005.

It is an arithmetic number, because the mean of its divisors is an integer number (34477005).

Almost surely, 2^68954009 is an apocalyptic number.

It is an amenable number.

68954009 is a deficient number, since it is larger than the sum of its proper divisors (1).

68954009 is an equidigital number, since it uses as much as digits as its factorization.

68954009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 68954009 is about 8303.8550685811. The cubic root of 68954009 is about 410.0654446394.

The spelling of 68954009 in words is "sixty-eight million, nine hundred fifty-four thousand, nine".