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68087799 = 3213581947
BaseRepresentation
bin1000000111011…
…10111111110111
311202010012220100
410003232333313
5114412302144
610431205143
71454510463
oct403567767
9152105810
1068087799
113548540a
121a9767b3
131114c350
1490854a3
155e9e269
hex40eeff7

68087799 has 12 divisors (see below), whose sum is σ = 105914536. Its totient is φ = 41900112.

The previous prime is 68087779. The next prime is 68087827. The reversal of 68087799 is 99778086.

It is not a de Polignac number, because 68087799 - 27 = 68087671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68087779) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 290857 + ... + 291090.

Almost surely, 268087799 is an apocalyptic number.

68087799 is a deficient number, since it is larger than the sum of its proper divisors (37826737).

68087799 is a wasteful number, since it uses less digits than its factorization.

68087799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581966 (or 581963 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The square root of 68087799 is about 8251.5331302734. The cubic root of 68087799 is about 408.3411038736.

It can be divided in two parts, 68087 and 799, that added together give a palindrome (68886).

The spelling of 68087799 in words is "sixty-eight million, eighty-seven thousand, seven hundred ninety-nine".

Divisors: 1 3 9 13 39 117 581947 1745841 5237523 7565311 22695933 68087799