68442497 has 2 divisors, whose sum is σ = 68442498. Its totient is φ = 68442496.

The previous prime is 68442487. The next prime is 68442499. The reversal of 68442497 is 79424486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54184321 + 14258176 = 7361^2 + 3776^2 .

It is a cyclic number.

It is not a de Polignac number, because 68442497 - 2¹⁶ = 68376961 is a prime.

Together with 68442499, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68442499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34221248 + 34221249.

It is an arithmetic number, because the mean of its divisors is an integer number (34221249).

Almost surely, 2^68442497 is an apocalyptic number.

It is an amenable number.

68442497 is a deficient number, since it is larger than the sum of its proper divisors (1).

68442497 is an equidigital number, since it uses as much as digits as its factorization.

68442497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 44.

The square root of 68442497 is about 8272.9980659976. The cubic root of 68442497 is about 409.0489496912.

The spelling of 68442497 in words is "sixty-eight million, four hundred forty-two thousand, four hundred ninety-seven".