68489473 has 8 divisors (see below), whose sum is σ = 73823400. Its totient is φ = 63164928.

The previous prime is 68489467. The next prime is 68489567. The reversal of 68489473 is 37498486.

It can be written as a sum of positive squares in 4 ways, for example, as 4297329 + 64192144 = 2073^2 + 8012^2 .

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 68489473 - 2⁵ = 68489441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68489273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23163 + ... + 25951.

It is an arithmetic number, because the mean of its divisors is an integer number (9227925).

Almost surely, 2^68489473 is an apocalyptic number.

It is an amenable number.

68489473 is a deficient number, since it is larger than the sum of its proper divisors (5333927).

68489473 is a wasteful number, since it uses less digits than its factorization.

68489473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4691.

The product of its digits is 1161216, while the sum is 49.

The square root of 68489473 is about 8275.8366948605. The cubic root of 68489473 is about 409.1425128513.

The spelling of 68489473 in words is "sixty-eight million, four hundred eighty-nine thousand, four hundred seventy-three".