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68839315 = 553259771
BaseRepresentation
bin1000001101001…
…10011110010011
311210112101210021
410012212132103
5120110324230
610455244311
71464060466
oct406463623
9153471707
1068839315
1135948aa6
121b079697
131135342c
1491dd2dd
15609bc7a
hex41a6793

68839315 has 8 divisors (see below), whose sum is σ = 84166128. Its totient is φ = 54032160.

The previous prime is 68839297. The next prime is 68839343. The reversal of 68839315 is 51393886.

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

It is not a de Polignac number, because 68839315 - 217 = 68708243 is a prime.

It is a Duffinian 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 in 7 ways as a sum of consecutive naturals, for example, 129621 + ... + 130150.

It is an arithmetic number, because the mean of its divisors is an integer number (10520766).

Almost surely, 268839315 is an apocalyptic number.

68839315 is a deficient number, since it is larger than the sum of its proper divisors (15326813).

68839315 is a wasteful number, since it uses less digits than its factorization.

68839315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259829.

The product of its digits is 155520, while the sum is 43.

The square root of 68839315 is about 8296.9461249305. The cubic root of 68839315 is about 409.8379589684.

The spelling of 68839315 in words is "sixty-eight million, eight hundred thirty-nine thousand, three hundred fifteen".

Divisors: 1 5 53 265 259771 1298855 13767863 68839315