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68148654 = 2371622587
BaseRepresentation
bin1000000111111…
…01110110101110
311202020022101020
410003331312232
5114421224104
610432355010
71455153060
oct403756656
9152208336
1068148654
1135517102
121a9a5a66
1311170c62
14909d730
155eb22d9
hex40fddae

68148654 has 16 divisors (see below), whose sum is σ = 155768448. Its totient is φ = 19471032.

The previous prime is 68148643. The next prime is 68148659. The reversal of 68148654 is 45684186.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1622587 = 68148654 / (6 + 8 + 1 + 4 + 8 + 6 + 5 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68148659) 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, 811252 + ... + 811335.

It is an arithmetic number, because the mean of its divisors is an integer number (9735528).

Almost surely, 268148654 is an apocalyptic number.

68148654 is an abundant number, since it is smaller than the sum of its proper divisors (87619794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68148654 is a wasteful number, since it uses less digits than its factorization.

68148654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622599.

The product of its digits is 184320, while the sum is 42.

The square root of 68148654 is about 8255.2198032518. The cubic root of 68148654 is about 408.4627223261.

The spelling of 68148654 in words is "sixty-eight million, one hundred forty-eight thousand, six hundred fifty-four".

Divisors: 1 2 3 6 7 14 21 42 1622587 3245174 4867761 9735522 11358109 22716218 34074327 68148654