Search a number
-
+
68616485 = 573163241
BaseRepresentation
bin1000001011100…
…00000100100101
311210010002010022
410011300010211
5120031211420
610450404525
71462142030
oct405600445
9153102108
1068616485
1135806643
121ab90745
13112a5b92
149182017
156055c25
hex4170125

68616485 has 16 divisors (see below), whose sum is σ = 97139712. Its totient is φ = 45532800.

The previous prime is 68616473. The next prime is 68616487. The reversal of 68616485 is 58461686.

It is not a de Polignac number, because 68616485 - 26 = 68616421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68616487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30536 + ... + 32705.

It is an arithmetic number, because the mean of its divisors is an integer number (6071232).

Almost surely, 268616485 is an apocalyptic number.

It is an amenable number.

68616485 is a deficient number, since it is larger than the sum of its proper divisors (28523227).

68616485 is a wasteful number, since it uses less digits than its factorization.

68616485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63284.

The product of its digits is 276480, while the sum is 44.

The square root of 68616485 is about 8283.5068056953. The cubic root of 68616485 is about 409.3952714939.

It can be divided in two parts, 686 and 16485, that added together give a palindrome (17171).

The spelling of 68616485 in words is "sixty-eight million, six hundred sixteen thousand, four hundred eighty-five".

Divisors: 1 5 7 31 35 155 217 1085 63241 316205 442687 1960471 2213435 9802355 13723297 68616485