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68817310 = 256881731
BaseRepresentation
bin1000001101000…
…01000110011110
311210111021121021
410012201012132
5120104123220
610454554354
71463636362
oct406410636
9153437537
1068817310
1135933511
121b0689ba
1311346403
1491d52a2
1560954aa
hex41a119e

68817310 has 8 divisors (see below), whose sum is σ = 123871176. Its totient is φ = 27526920.

The previous prime is 68817293. The next prime is 68817317. The reversal of 68817310 is 1371886.

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

It is a super-2 number, since 2×688173102 = 9471644311272200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68817317) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3440856 + ... + 3440875.

It is an arithmetic number, because the mean of its divisors is an integer number (15483897).

Almost surely, 268817310 is an apocalyptic number.

68817310 is a deficient number, since it is larger than the sum of its proper divisors (55053866).

68817310 is a wasteful number, since it uses less digits than its factorization.

68817310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6881738.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 68817310 is about 8295.6199286129. The cubic root of 68817310 is about 409.7942850620.

The spelling of 68817310 in words is "sixty-eight million, eight hundred seventeen thousand, three hundred ten".

Divisors: 1 2 5 10 6881731 13763462 34408655 68817310