68456785 has 8 divisors (see below), whose sum is σ = 82333800. Its totient is φ = 54641664.

The previous prime is 68456779. The next prime is 68456789. The reversal of 68456785 is 58765486.

It can be written as a sum of positive squares in 4 ways, for example, as 839056 + 67617729 = 916^2 + 8223^2 .

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 68456785 - 2³ = 68456777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68456789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13002 + ... + 17491.

It is an arithmetic number, because the mean of its divisors is an integer number (10291725).

Almost surely, 2^68456785 is an apocalyptic number.

It is an amenable number.

68456785 is a deficient number, since it is larger than the sum of its proper divisors (13877015).

68456785 is a wasteful number, since it uses less digits than its factorization.

68456785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30947.

The product of its digits is 1612800, while the sum is 49.

The square root of 68456785 is about 8273.8615531081. The cubic root of 68456785 is about 409.0774119527.

The spelling of 68456785 in words is "sixty-eight million, four hundred fifty-six thousand, seven hundred eighty-five".