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68670910 = 25711101883
BaseRepresentation
bin1000001011111…
…01010110111110
311210012211210001
410011331112332
5120034432120
610451504514
71462456510
oct405752676
9153184701
1068670910
1135843520
121abb813a
13112c4899
149197bb0
156066e0a
hex417d5be

68670910 has 64 divisors (see below), whose sum is σ = 155810304. Its totient is φ = 21168000.

The previous prime is 68670787. The next prime is 68670929. The reversal of 68670910 is 1907686.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 68670910.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77329 + ... + 78211.

It is an arithmetic number, because the mean of its divisors is an integer number (2434536).

Almost surely, 268670910 is an apocalyptic number.

68670910 is an abundant number, since it is smaller than the sum of its proper divisors (87139394).

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

68670910 is a wasteful number, since it uses less digits than its factorization.

68670910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 68670910 is about 8286.7912969979. The cubic root of 68670910 is about 409.5034838243.

The spelling of 68670910 in words is "sixty-eight million, six hundred seventy thousand, nine hundred ten".

Divisors: 1 2 5 7 10 11 14 22 35 55 70 77 101 110 154 202 385 505 707 770 883 1010 1111 1414 1766 2222 3535 4415 5555 6181 7070 7777 8830 9713 11110 12362 15554 19426 30905 38885 48565 61810 67991 77770 89183 97130 135982 178366 339955 445915 624281 679910 891830 981013 1248562 1962026 3121405 4905065 6242810 6867091 9810130 13734182 34335455 68670910