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68876090 = 256887609
BaseRepresentation
bin1000001101011…
…11011100111010
311210121021020022
410012233130322
5120113013330
610500130442
71464302633
oct406573472
9153537208
1068876090
1135973698
121b096a22
13113670aa
14920c88a
1560a7ae5
hex41af73a

68876090 has 8 divisors (see below), whose sum is σ = 123976980. Its totient is φ = 27550432.

The previous prime is 68876081. The next prime is 68876117. The reversal of 68876090 is 9067886.

It can be written as a sum of positive squares in 2 ways, for example, as 62520649 + 6355441 = 7907^2 + 2521^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3443795 + ... + 3443814.

Almost surely, 268876090 is an apocalyptic number.

68876090 is a deficient number, since it is larger than the sum of its proper divisors (55100890).

68876090 is a wasteful number, since it uses less digits than its factorization.

68876090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6887616.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 68876090 is about 8299.1620058895. The cubic root of 68876090 is about 409.9109265155.

The spelling of 68876090 in words is "sixty-eight million, eight hundred seventy-six thousand, ninety".

Divisors: 1 2 5 10 6887609 13775218 34438045 68876090