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68870670 = 23511208699
BaseRepresentation
bin1000001101011…
…10001000001110
311210120222210120
410012232020032
5120112330140
610500045410
71464251061
oct406561016
9153528716
1068870670
113596a610
121b093866
131136479b
14920a8d8
1560a61d0
hex41ae20e

68870670 has 32 divisors (see below), whose sum is σ = 180316800. Its totient is φ = 16695840.

The previous prime is 68870629. The next prime is 68870701. The reversal of 68870670 is 7607886.

68870670 = T1727 + T1728 + ... + T1771.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104020 + ... + 104679.

It is an arithmetic number, because the mean of its divisors is an integer number (5634900).

Almost surely, 268870670 is an apocalyptic number.

68870670 is an abundant number, since it is smaller than the sum of its proper divisors (111446130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68870670 is a wasteful number, since it uses less digits than its factorization.

68870670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208720.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 68870670 is about 8298.8354604728. The cubic root of 68870670 is about 409.9001739912.

The spelling of 68870670 in words is "sixty-eight million, eight hundred seventy thousand, six hundred seventy".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 330 208699 417398 626097 1043495 1252194 2086990 2295689 3130485 4591378 6260970 6887067 11478445 13774134 22956890 34435335 68870670