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8687349906 = 231447891651
BaseRepresentation
bin10000001011100111…
…00111000010010010
3211102102210002201020
420011303213002102
5120242430144111
63554012020310
7425165153514
oct100563470222
924372702636
108687349906
113758867624
121825461696
13a85a73641
145c5aabbb4
1535ca1e906
hex205ce7092

8687349906 has 8 divisors (see below), whose sum is σ = 17374699824. Its totient is φ = 2895783300.

The previous prime is 8687349901. The next prime is 8687349919. The reversal of 8687349906 is 6099437868.

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

8687349906 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 8687349906.

It is not an unprimeable number, because it can be changed into a prime (8687349901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 723945820 + ... + 723945831.

It is an arithmetic number, because the mean of its divisors is an integer number (2171837478).

Almost surely, 28687349906 is an apocalyptic number.

8687349906 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

8687349906 is a wasteful number, since it uses less digits than its factorization.

8687349906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447891656.

The product of its (nonzero) digits is 15676416, while the sum is 60.

The square root of 8687349906 is about 93205.9542411320. The cubic root of 8687349906 is about 2055.7127906641.

The spelling of 8687349906 in words is "eight billion, six hundred eighty-seven million, three hundred forty-nine thousand, nine hundred six".

Divisors: 1 2 3 6 1447891651 2895783302 4343674953 8687349906