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68850881 = 1123926189
BaseRepresentation
bin1000001101010…
…01010011000001
311210112222122122
410012221103001
5120111212011
610455414025
71464136301
oct406512301
9153488578
1068850881
1135956760
121b084315
1311358788
149203601
1560a03db
hex41a94c1

68850881 has 8 divisors (see below), whose sum is σ = 75427200. Its totient is φ = 62327440.

The previous prime is 68850871. The next prime is 68850917. The reversal of 68850881 is 18805886.

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 68850881 - 222 = 64656577 is a prime.

It is a super-2 number, since 2×688508812 = 9480887628952322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68850871) 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, 10466 + ... + 15723.

It is an arithmetic number, because the mean of its divisors is an integer number (9428400).

Almost surely, 268850881 is an apocalyptic number.

It is an amenable number.

68850881 is a deficient number, since it is larger than the sum of its proper divisors (6576319).

68850881 is a wasteful number, since it uses less digits than its factorization.

68850881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26439.

The product of its (nonzero) digits is 122880, while the sum is 44.

The square root of 68850881 is about 8297.6430990975. The cubic root of 68850881 is about 409.8609105835.

The spelling of 68850881 in words is "sixty-eight million, eight hundred fifty thousand, eight hundred eighty-one".

Divisors: 1 11 239 2629 26189 288079 6259171 68850881