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641060911 = 13939711617
BaseRepresentation
bin100110001101011…
…101000000101111
31122200021021020201
4212031131000233
52303102422121
6143340054331
721612633151
oct4615350057
91580237221
10641060911
112a9953607
1215a8343a7
13a2a742aa
14611d4ad1
153b42de91
hex2635d02f

641060911 has 8 divisors (see below), whose sum is σ = 647354960. Its totient is φ = 634791168.

The previous prime is 641060897. The next prime is 641060929. The reversal of 641060911 is 119060146.

641060911 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 a cyclic number.

It is not a de Polignac number, because 641060911 - 211 = 641058863 is a prime.

It is a super-2 number, since 2×6410609112 = 821918183224299842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 641060911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641060941) 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, 49375 + ... + 60991.

It is an arithmetic number, because the mean of its divisors is an integer number (80919370).

Almost surely, 2641060911 is an apocalyptic number.

641060911 is a deficient number, since it is larger than the sum of its proper divisors (6294049).

641060911 is a wasteful number, since it uses less digits than its factorization.

641060911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12153.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 641060911 is about 25319.1806936954. The cubic root of 641060911 is about 862.2497930257.

The spelling of 641060911 in words is "six hundred forty-one million, sixty thousand, nine hundred eleven".

Divisors: 1 139 397 11617 55183 1614763 4611949 641060911