68708489 has 4 divisors (see below), whose sum is σ = 68982480. Its totient is φ = 68434500.

The previous prime is 68708483. The next prime is 68708491. The reversal of 68708489 is 98480786.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68708489 - 2²⁰ = 67659913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68708483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136619 + ... + 137120.

It is an arithmetic number, because the mean of its divisors is an integer number (17245620).

Almost surely, 2^68708489 is an apocalyptic number.

It is an amenable number.

68708489 is a deficient number, since it is larger than the sum of its proper divisors (273991).

68708489 is a wasteful number, since it uses less digits than its factorization.

68708489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273990.

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 68708489 is about 8289.0583904325. The cubic root of 68708489 is about 409.5781681663.

The spelling of 68708489 in words is "sixty-eight million, seven hundred eight thousand, four hundred eighty-nine".