68081489 has 8 divisors (see below), whose sum is σ = 78792960. Its totient is φ = 57616416.

The previous prime is 68081477. The next prime is 68081501. The reversal of 68081489 is 98418086.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68081477) and next prime (68081501).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68081489 - 2¹² = 68077393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68081459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61004 + ... + 62109.

It is an arithmetic number, because the mean of its divisors is an integer number (9849120).

Almost surely, 2^68081489 is an apocalyptic number.

It is an amenable number.

68081489 is a deficient number, since it is larger than the sum of its proper divisors (10711471).

68081489 is a wasteful number, since it uses less digits than its factorization.

68081489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123199.

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 68081489 is about 8251.1507682262. The cubic root of 68081489 is about 408.3284892201.

The spelling of 68081489 in words is "sixty-eight million, eighty-one thousand, four hundred eighty-nine".