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68751255 = 3523349571
BaseRepresentation
bin1000001100100…
…00111110010111
311210100220222210
410012100332113
5120100020010
610453324503
71463242656
oct406207627
9153326883
1068751255
1135898921
121b036733
1311322321
1491b919d
156080b20
hex4190f97

68751255 has 32 divisors (see below), whose sum is σ = 115315200. Its totient is φ = 34911360.

The previous prime is 68751233. The next prime is 68751259. The reversal of 68751255 is 55215786.

It is not a de Polignac number, because 68751255 - 27 = 68751127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68751259) 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 31 ways as a sum of consecutive naturals, for example, 120120 + ... + 120690.

It is an arithmetic number, because the mean of its divisors is an integer number (3603600).

Almost surely, 268751255 is an apocalyptic number.

68751255 is a deficient number, since it is larger than the sum of its proper divisors (46563945).

68751255 is a wasteful number, since it uses less digits than its factorization.

68751255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951.

The product of its digits is 84000, while the sum is 39.

The square root of 68751255 is about 8291.6376548906. The cubic root of 68751255 is about 409.6631280081.

It can be divided in two parts, 68751 and 255, that added together give a triangular number (69006 = T371).

The spelling of 68751255 in words is "sixty-eight million, seven hundred fifty-one thousand, two hundred fifty-five".

Divisors: 1 3 5 15 23 69 115 345 349 571 1047 1713 1745 2855 5235 8027 8565 13133 24081 39399 40135 65665 120405 196995 199279 597837 996395 2989185 4583417 13750251 22917085 68751255