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68313068 = 22433891021
BaseRepresentation
bin1000001001001…
…01111111101100
311202112122220122
410010211333230
5114442004233
610440104112
71456436315
oct404457754
9152478818
1068313068
113561968a
121aa65038
13111caa45
14910360c
155ee5d98
hex4125fec

68313068 has 24 divisors (see below), whose sum is σ = 122762640. Its totient is φ = 33243840.

The previous prime is 68313061. The next prime is 68313071. The reversal of 68313068 is 86031386.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (68313061) 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, 66398 + ... + 67418.

It is an arithmetic number, because the mean of its divisors is an integer number (5115110).

Almost surely, 268313068 is an apocalyptic number.

It is an amenable number.

68313068 is a deficient number, since it is larger than the sum of its proper divisors (54449572).

68313068 is a wasteful number, since it uses less digits than its factorization.

68313068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457 (or 1455 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 68313068 is about 8265.1719885312. The cubic root of 68313068 is about 408.7909413551.

The spelling of 68313068 in words is "sixty-eight million, three hundred thirteen thousand, sixty-eight".

Divisors: 1 2 4 43 86 172 389 778 1021 1556 2042 4084 16727 33454 43903 66908 87806 175612 397169 794338 1588676 17078267 34156534 68313068