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68774319 = 3319791697
BaseRepresentation
bin1000001100101…
…10100110101111
311210102002122000
410012112212233
5120101234234
610454023343
71463400135
oct406264657
9153362560
1068774319
1135904189
121b047b53
131132c983
1491c3755
156087899
hex41969af

68774319 has 32 divisors (see below), whose sum is σ = 108672000. Its totient is φ = 42861312.

The previous prime is 68774317. The next prime is 68774323. The reversal of 68774319 is 91347786.

It is not a de Polignac number, because 68774319 - 21 = 68774317 is a prime.

It is a super-2 number, since 2×687743192 = 9459813907827522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68774311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39679 + ... + 41375.

It is an arithmetic number, because the mean of its divisors is an integer number (3396000).

Almost surely, 268774319 is an apocalyptic number.

68774319 is a deficient number, since it is larger than the sum of its proper divisors (39897681).

68774319 is a wasteful number, since it uses less digits than its factorization.

68774319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804 (or 1798 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 68774319 is about 8293.0283371034. The cubic root of 68774319 is about 409.7089328156.

The spelling of 68774319 in words is "sixty-eight million, seven hundred seventy-four thousand, three hundred nineteen".

Divisors: 1 3 9 19 27 57 79 171 237 513 711 1501 1697 2133 4503 5091 13509 15273 32243 40527 45819 96729 134063 290187 402189 870561 1206567 2547197 3619701 7641591 22924773 68774319