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668083255 = 57175919031
BaseRepresentation
bin100111110100100…
…010010000110111
31201120010010221021
4213310202100313
52332012131010
6150143202011
722361420410
oct4764422067
91646103837
10668083255
1131312a924
121678a6307
13a8545b48
1464a2a807
153d9ba8da
hex27d22437

668083255 has 32 divisors (see below), whose sum is σ = 986618880. Its totient is φ = 423836160.

The previous prime is 668083253. The next prime is 668083261. The reversal of 668083255 is 552380866.

It is a happy number.

668083255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 668083255 - 21 = 668083253 is a prime.

It is a super-2 number, since 2×6680832552 = 892670471222790050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668083253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25590 + ... + 44620.

It is an arithmetic number, because the mean of its divisors is an integer number (30831840).

Almost surely, 2668083255 is an apocalyptic number.

668083255 is a deficient number, since it is larger than the sum of its proper divisors (318535625).

668083255 is a wasteful number, since it uses less digits than its factorization.

668083255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19119.

The product of its (nonzero) digits is 345600, while the sum is 43.

The square root of 668083255 is about 25847.3065327898. The cubic root of 668083255 is about 874.1987789418.

The spelling of 668083255 in words is "six hundred sixty-eight million, eighty-three thousand, two hundred fifty-five".

Divisors: 1 5 7 17 35 59 85 119 295 413 595 1003 2065 5015 7021 19031 35105 95155 133217 323527 666085 1122829 1617635 2264689 5614145 7859803 11323445 19088093 39299015 95440465 133616651 668083255