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68740814 = 234370407
BaseRepresentation
bin1000001100011…
…10011011001110
311210100101200002
410012032123032
5120044201224
610453204302
71463200352
oct406163316
9153311602
1068740814
1135890a9a
121b030692
131131a64c
1491b5462
15607c9ae
hex418e6ce

68740814 has 4 divisors (see below), whose sum is σ = 103111224. Its totient is φ = 34370406.

The previous prime is 68740801. The next prime is 68740829. The reversal of 68740814 is 41804786.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41804786 = 220902393.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 17185202 + ... + 17185205.

It is an arithmetic number, because the mean of its divisors is an integer number (25777806).

Almost surely, 268740814 is an apocalyptic number.

68740814 is a deficient number, since it is larger than the sum of its proper divisors (34370410).

68740814 is a wasteful number, since it uses less digits than its factorization.

68740814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34370409.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 68740814 is about 8291.0080207415. The cubic root of 68740814 is about 409.6423889478.

The spelling of 68740814 in words is "sixty-eight million, seven hundred forty thousand, eight hundred fourteen".

Divisors: 1 2 34370407 68740814