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68471469 = 3211691631
BaseRepresentation
bin1000001010011…
…00101010101101
311202211201012100
410011030222231
5120012041334
610443325313
71460666163
oct405145255
9152751170
1068471469
11357176a0
121ab20839
1311254b81
149145233
156027c99
hex414caad

68471469 has 12 divisors (see below), whose sum is σ = 107894592. Its totient is φ = 41497800.

The previous prime is 68471441. The next prime is 68471471. The reversal of 68471469 is 96417486.

It is not a de Polignac number, because 68471469 - 28 = 68471213 is a prime.

It is a super-2 number, since 2×684714692 = 9376684134035922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68471419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 345717 + ... + 345914.

It is an arithmetic number, because the mean of its divisors is an integer number (8991216).

Almost surely, 268471469 is an apocalyptic number.

It is an amenable number.

68471469 is a deficient number, since it is larger than the sum of its proper divisors (39423123).

68471469 is a wasteful number, since it uses less digits than its factorization.

68471469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691648 (or 691645 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 68471469 is about 8274.7488783648. The cubic root of 68471469 is about 409.1066589357.

The spelling of 68471469 in words is "sixty-eight million, four hundred seventy-one thousand, four hundred sixty-nine".

Divisors: 1 3 9 11 33 99 691631 2074893 6224679 7607941 22823823 68471469