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68586487654 = 275745301511
BaseRepresentation
bin111111111000000100…
…101011111101100110
320120000220120120110111
4333320010223331212
52110431120101104
651301434243234
74645431345256
oct777004537546
9216026516414
1068586487654
11270a6314353
121136158651a
136610647709
143468dc7966
151bb649c404
hexff812bf66

68586487654 has 8 divisors (see below), whose sum is σ = 103015638288. Its totient is φ = 34247941560.

The previous prime is 68586487649. The next prime is 68586487657. The reversal of 68586487654 is 45678468586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 68586487654.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68586487657) 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, 22649242 + ... + 22652269.

It is an arithmetic number, because the mean of its divisors is an integer number (12876954786).

Almost surely, 268586487654 is an apocalyptic number.

68586487654 is a deficient number, since it is larger than the sum of its proper divisors (34429150634).

68586487654 is a wasteful number, since it uses less digits than its factorization.

68586487654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45302270.

The product of its digits is 309657600, while the sum is 67.

The spelling of 68586487654 in words is "sixty-eight billion, five hundred eighty-six million, four hundred eighty-seven thousand, six hundred fifty-four".

Divisors: 1 2 757 1514 45301511 90603022 34293243827 68586487654