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68415351 = 328181157
BaseRepresentation
bin1000001001111…
…10111101110111
311202201212012220
410010332331313
5120003242401
610442213423
71460343444
oct404767567
9152655186
1068415351
1135689514
121aab4273
1311235474
14912c9cb
156016336
hex413ef77

68415351 has 8 divisors (see below), whose sum is σ = 91546224. Its totient is φ = 45447360.

The previous prime is 68415341. The next prime is 68415377. The reversal of 68415351 is 15351486.

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

It is not a de Polignac number, because 68415351 - 215 = 68382583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68415301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39736 + ... + 41421.

It is an arithmetic number, because the mean of its divisors is an integer number (11443278).

Almost surely, 268415351 is an apocalyptic number.

68415351 is a deficient number, since it is larger than the sum of its proper divisors (23130873).

68415351 is a wasteful number, since it uses less digits than its factorization.

68415351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81441.

The product of its digits is 14400, while the sum is 33.

The square root of 68415351 is about 8271.3572646815. The cubic root of 68415351 is about 408.9948628707.

The spelling of 68415351 in words is "sixty-eight million, four hundred fifteen thousand, three hundred fifty-one".

Divisors: 1 3 281 843 81157 243471 22805117 68415351