68071489 has 2 divisors, whose sum is σ = 68071490. Its totient is φ = 68071488.

The previous prime is 68071483. The next prime is 68071583. The reversal of 68071489 is 98417086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67897600 + 173889 = 8240^2 + 417^2 .

It is a cyclic number.

It is not a de Polignac number, because 68071489 - 2¹³ = 68063297 is a prime.

It is a super-2 number, since 2×68071489² = 9267455229354242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68071483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34035744 + 34035745.

It is an arithmetic number, because the mean of its divisors is an integer number (34035745).

Almost surely, 2^68071489 is an apocalyptic number.

It is an amenable number.

68071489 is a deficient number, since it is larger than the sum of its proper divisors (1).

68071489 is an equidigital number, since it uses as much as digits as its factorization.

68071489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 68071489 is about 8250.5447698925. The cubic root of 68071489 is about 408.3084960968.

The spelling of 68071489 in words is "sixty-eight million, seventy-one thousand, four hundred eighty-nine".