Search a number
-
+
68658903 = 3217538467
BaseRepresentation
bin1000001011110…
…10011011010111
311210012020022100
410011322123113
5120034041103
610451333143
71462406505
oct405723327
9153166270
1068658903
11358354a5
121abb11b3
13112bc291
149193675
1560635a3
hex417a6d7

68658903 has 24 divisors (see below), whose sum is σ = 107001648. Its totient is φ = 42262272.

The previous prime is 68658901. The next prime is 68658929. The reversal of 68658903 is 30985686.

68658903 is a `hidden beast` number, since 68 + 6 + 589 + 0 + 3 = 666.

It is not a de Polignac number, because 68658903 - 21 = 68658901 is a prime.

It is a super-2 number, since 2×686589032 = 9428089922326818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68658901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3876 + ... + 12342.

It is an arithmetic number, because the mean of its divisors is an integer number (4458402).

Almost surely, 268658903 is an apocalyptic number.

68658903 is a deficient number, since it is larger than the sum of its proper divisors (38342745).

68658903 is a wasteful number, since it uses less digits than its factorization.

68658903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8543 (or 8540 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 68658903 is about 8286.0667991515. The cubic root of 68658903 is about 409.4796154209.

The spelling of 68658903 in words is "sixty-eight million, six hundred fifty-eight thousand, nine hundred three".

Divisors: 1 3 9 17 51 53 153 159 477 901 2703 8109 8467 25401 76203 143939 431817 448751 1295451 1346253 4038759 7628767 22886301 68658903