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68811474 = 2391112589
BaseRepresentation
bin1000001100111…
…11101011010010
311210110222121010
410012133223102
5120103431344
610454511350
71463613354
oct406375322
9153428533
1068811474
113592a096
121b065556
1311343864
1491d30d4
1560938b9
hex419fad2

68811474 has 16 divisors (see below), whose sum is σ = 137784960. Its totient is φ = 22910160.

The previous prime is 68811467. The next prime is 68811487. The reversal of 68811474 is 47411886.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 829 + ... + 11760.

It is an arithmetic number, because the mean of its divisors is an integer number (8611560).

Almost surely, 268811474 is an apocalyptic number.

68811474 is an abundant number, since it is smaller than the sum of its proper divisors (68973486).

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

68811474 is a wasteful number, since it uses less digits than its factorization.

68811474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13505.

The product of its digits is 43008, while the sum is 39.

The square root of 68811474 is about 8295.2681692637. The cubic root of 68811474 is about 409.7827006363.

The spelling of 68811474 in words is "sixty-eight million, eight hundred eleven thousand, four hundred seventy-four".

Divisors: 1 2 3 6 911 1822 2733 5466 12589 25178 37767 75534 11468579 22937158 34405737 68811474