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68925493 = 7133153461
BaseRepresentation
bin1000001101110…
…11100000110101
311210200210000001
410012323200311
5120121103433
610501151301
71464566650
oct406734065
9153623001
1068925493
11359a781a
121b0bb531
1311383720
149222897
1560b757d
hex41bb835

68925493 has 32 divisors (see below), whose sum is σ = 89413632. Its totient is φ = 51667200.

The previous prime is 68925481. The next prime is 68925523. The reversal of 68925493 is 39452986.

It is not a de Polignac number, because 68925493 - 213 = 68917301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68925433) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 149283 + ... + 149743.

It is an arithmetic number, because the mean of its divisors is an integer number (2794176).

Almost surely, 268925493 is an apocalyptic number.

It is an amenable number.

68925493 is a deficient number, since it is larger than the sum of its proper divisors (20488139).

68925493 is a wasteful number, since it uses less digits than its factorization.

68925493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565.

The product of its digits is 466560, while the sum is 46.

The square root of 68925493 is about 8302.1378572028. The cubic root of 68925493 is about 410.0089091857.

The spelling of 68925493 in words is "sixty-eight million, nine hundred twenty-five thousand, four hundred ninety-three".

Divisors: 1 7 13 31 53 91 217 371 403 461 689 1643 2821 3227 4823 5993 11501 14291 21359 24433 41951 100037 149513 171031 185783 317629 757423 1300481 2223403 5301961 9846499 68925493