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68851835 = 5131059259
BaseRepresentation
bin1000001101010…
…01100001111011
311210120000221222
410012221201323
5120111224320
610455422255
71464142133
oct406514173
9153500858
1068851835
1135957448
121b08498b
1311359040
149203ac3
1560a0825
hex41a987b

68851835 has 8 divisors (see below), whose sum is σ = 88977840. Its totient is φ = 50844384.

The previous prime is 68851807. The next prime is 68851847. The reversal of 68851835 is 53815886.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68851835 - 28 = 68851579 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 529565 + ... + 529694.

It is an arithmetic number, because the mean of its divisors is an integer number (11122230).

Almost surely, 268851835 is an apocalyptic number.

68851835 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

68851835 is a deficient number, since it is larger than the sum of its proper divisors (20126005).

68851835 is a wasteful number, since it uses less digits than its factorization.

68851835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059277.

The product of its digits is 230400, while the sum is 44.

The square root of 68851835 is about 8297.7005851019. The cubic root of 68851835 is about 409.8628035901.

The spelling of 68851835 in words is "sixty-eight million, eight hundred fifty-one thousand, eight hundred thirty-five".

Divisors: 1 5 13 65 1059259 5296295 13770367 68851835