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68087884 = 2217021971
BaseRepresentation
bin1000000111011…
…11000001001100
311202010020000111
410003233001030
5114412303014
610431205404
71454510644
oct403570114
9152106014
1068087884
1135485487
121a976864
131114c3b7
149085524
155e9e2c4
hex40ef04c

68087884 has 6 divisors (see below), whose sum is σ = 119153804. Its totient is φ = 34043940.

The previous prime is 68087861. The next prime is 68087893. The reversal of 68087884 is 48878086.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8510982 + ... + 8510989.

Almost surely, 268087884 is an apocalyptic number.

It is an amenable number.

68087884 is a deficient number, since it is larger than the sum of its proper divisors (51065920).

68087884 is a wasteful number, since it uses less digits than its factorization.

68087884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17021975 (or 17021973 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 49.

The square root of 68087884 is about 8251.5382808298. The cubic root of 68087884 is about 408.3412737963.

The spelling of 68087884 in words is "sixty-eight million, eighty-seven thousand, eight hundred eighty-four".

Divisors: 1 2 4 17021971 34043942 68087884