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68816604 = 2239296173
BaseRepresentation
bin1000001101000…
…00111011011100
311210111020122010
410012200323130
5120104112404
610454551220
71463634333
oct406407334
9153436563
1068816604
1135932a2a
121b068510
1311345cac
1491d4d1a
156095189
hex41a0edc

68816604 has 24 divisors (see below), whose sum is σ = 160770960. Its totient is φ = 22910464.

The previous prime is 68816569. The next prime is 68816609. The reversal of 68816604 is 40661886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68816609) 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, 8062 + ... + 14234.

It is an arithmetic number, because the mean of its divisors is an integer number (6698790).

Almost surely, 268816604 is an apocalyptic number.

It is an amenable number.

68816604 is an abundant number, since it is smaller than the sum of its proper divisors (91954356).

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

68816604 is a wasteful number, since it uses less digits than its factorization.

68816604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7109 (or 7107 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 68816604 is about 8295.5773759275. The cubic root of 68816604 is about 409.7928836910.

The spelling of 68816604 in words is "sixty-eight million, eight hundred sixteen thousand, six hundred four".

Divisors: 1 2 3 4 6 12 929 1858 2787 3716 5574 6173 11148 12346 18519 24692 37038 74076 5734717 11469434 17204151 22938868 34408302 68816604