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68524789 = 271293863
BaseRepresentation
bin1000001010110…
…01101011110101
311202221102100011
410011121223311
5120020243124
610444420221
71461310504
oct405315365
9152842304
1068524789
1135753763
121ab47671
1311273218
14915a83b
156038994
hex4159af5

68524789 has 8 divisors (see below), whose sum is σ = 69092352. Its totient is φ = 67960080.

The previous prime is 68524759. The next prime is 68524793. The reversal of 68524789 is 98742586.

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 68524789 - 29 = 68524277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68524759) 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, 78972 + ... + 79834.

It is an arithmetic number, because the mean of its divisors is an integer number (8636544).

Almost surely, 268524789 is an apocalyptic number.

It is an amenable number.

68524789 is a deficient number, since it is larger than the sum of its proper divisors (567563).

68524789 is a wasteful number, since it uses less digits than its factorization.

68524789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427.

The product of its digits is 967680, while the sum is 49.

The square root of 68524789 is about 8277.9701014198. The cubic root of 68524789 is about 409.2128243582.

The spelling of 68524789 in words is "sixty-eight million, five hundred twenty-four thousand, seven hundred eighty-nine".

Divisors: 1 271 293 863 79403 233873 252859 68524789