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68671065 = 358951439
BaseRepresentation
bin1000001011111…
…01011001011001
311210012211222210
410011331121121
5120034433230
610451505333
71462460121
oct405753131
9153184883
1068671065
1135843651
121abb8249
13112c4988
149197c81
156066eb0
hex417d659

68671065 has 16 divisors (see below), whose sum is σ = 111110400. Its totient is φ = 36212352.

The previous prime is 68671049. The next prime is 68671067. The reversal of 68671065 is 56017686.

It is not a de Polignac number, because 68671065 - 24 = 68671049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68671067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24385 + ... + 27054.

It is an arithmetic number, because the mean of its divisors is an integer number (6944400).

Almost surely, 268671065 is an apocalyptic number.

It is an amenable number.

68671065 is a deficient number, since it is larger than the sum of its proper divisors (42439335).

68671065 is a wasteful number, since it uses less digits than its factorization.

68671065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51536.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 68671065 is about 8286.8006492252. The cubic root of 68671065 is about 409.5037919266.

The spelling of 68671065 in words is "sixty-eight million, six hundred seventy-one thousand, sixty-five".

Divisors: 1 3 5 15 89 267 445 1335 51439 154317 257195 771585 4578071 13734213 22890355 68671065