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68781196 = 22111563209
BaseRepresentation
bin1000001100110…
…00010010001100
311210102110001201
410012120102030
5120101444241
610454115244
71463426161
oct406302214
9153373051
1068781196
1135909370
121b04bb24
1311332b43
1491c6068
156089931
hex419848c

68781196 has 12 divisors (see below), whose sum is σ = 131309640. Its totient is φ = 31264160.

The previous prime is 68781173. The next prime is 68781199. The reversal of 68781196 is 69118786.

It is not an unprimeable number, because it can be changed into a prime (68781199) 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, 781561 + ... + 781648.

It is an arithmetic number, because the mean of its divisors is an integer number (10942470).

Almost surely, 268781196 is an apocalyptic number.

It is an amenable number.

68781196 is a deficient number, since it is larger than the sum of its proper divisors (62528444).

68781196 is a wasteful number, since it uses less digits than its factorization.

68781196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563224 (or 1563222 counting only the distinct ones).

The product of its digits is 145152, while the sum is 46.

The square root of 68781196 is about 8293.4429521158. The cubic root of 68781196 is about 409.7225884673.

The spelling of 68781196 in words is "sixty-eight million, seven hundred eighty-one thousand, one hundred ninety-six".

Divisors: 1 2 4 11 22 44 1563209 3126418 6252836 17195299 34390598 68781196