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680420841 = 3661343127
BaseRepresentation
bin101000100011100…
…110010111101001
31202102022221220220
4220203212113221
52343141431331
6151303440253
722601324142
oct5043462751
91672287826
10680420841
1131a097281
1216ba56089
13aac756a9
146651cac9
153eb06296
hex288e65e9

680420841 has 8 divisors (see below), whose sum is σ = 908602944. Its totient is φ = 452926320.

The previous prime is 680420827. The next prime is 680420857. The reversal of 680420841 is 148024086.

680420841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 680420841 - 227 = 546203113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (680420821) 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, 169581 + ... + 173546.

It is an arithmetic number, because the mean of its divisors is an integer number (113575368).

Almost surely, 2680420841 is an apocalyptic number.

It is an amenable number.

680420841 is a deficient number, since it is larger than the sum of its proper divisors (228182103).

680420841 is a wasteful number, since it uses less digits than its factorization.

680420841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343791.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 680420841 is about 26084.8776305353. The cubic root of 680420841 is about 879.5473054715.

The spelling of 680420841 in words is "six hundred eighty million, four hundred twenty thousand, eight hundred forty-one".

Divisors: 1 3 661 1983 343127 1029381 226806947 680420841