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68778586 = 2434331847
BaseRepresentation
bin1000001100101…
…11101001011010
311210102022111001
410012113221122
5120101403321
610454055214
71463415442
oct406275132
9153368431
1068778586
1135907408
121b04a50a
13113318b6
1491c5122
156088c91
hex4197a5a

68778586 has 16 divisors (see below), whose sum is σ = 105868224. Its totient is φ = 33493824.

The previous prime is 68778557. The next prime is 68778587. The reversal of 68778586 is 68587786.

It is not an unprimeable number, because it can be changed into a prime (68778587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36315 + ... + 38161.

It is an arithmetic number, because the mean of its divisors is an integer number (6616764).

Almost surely, 268778586 is an apocalyptic number.

68778586 is a deficient number, since it is larger than the sum of its proper divisors (37089638).

68778586 is a wasteful number, since it uses less digits than its factorization.

68778586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2325.

The product of its digits is 4515840, while the sum is 55.

The square root of 68778586 is about 8293.2855973975. The cubic root of 68778586 is about 409.7174059002.

The spelling of 68778586 in words is "sixty-eight million, seven hundred seventy-eight thousand, five hundred eighty-six".

Divisors: 1 2 43 86 433 866 1847 3694 18619 37238 79421 158842 799751 1599502 34389293 68778586