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68227481 = 779123377
BaseRepresentation
bin1000001000100…
…01000110011001
311202101022111202
410010101012121
5114431234411
610434203545
71455631640
oct404210631
9152338452
1068227481
1135570353
121aa235b5
131119aaba
1490c0357
155eca83b
hex4111199

68227481 has 8 divisors (see below), whose sum is σ = 78961920. Its totient is φ = 57739968.

The previous prime is 68227457. The next prime is 68227493. The reversal of 68227481 is 18472286.

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 68227481 - 26 = 68227417 is a prime.

It is a super-2 number, since 2×682274812 = 9309978327210722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68227421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61136 + ... + 62241.

It is an arithmetic number, because the mean of its divisors is an integer number (9870240).

Almost surely, 268227481 is an apocalyptic number.

It is an amenable number.

68227481 is a deficient number, since it is larger than the sum of its proper divisors (10734439).

68227481 is a wasteful number, since it uses less digits than its factorization.

68227481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123463.

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

The square root of 68227481 is about 8259.9927966070. The cubic root of 68227481 is about 408.6201501585.

The spelling of 68227481 in words is "sixty-eight million, two hundred twenty-seven thousand, four hundred eighty-one".

Divisors: 1 7 79 553 123377 863639 9746783 68227481