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68877283 = 199346117
BaseRepresentation
bin1000001101011…
…11101111100011
311210121022212111
410012233233203
5120113033113
610500140151
71464306256
oct406575743
9153538774
1068877283
1135974582
121b097657
13113677b7
14920d09d
1560a813d
hex41afbe3

68877283 has 4 divisors (see below), whose sum is σ = 69223600. Its totient is φ = 68530968.

The previous prime is 68877241. The next prime is 68877287. The reversal of 68877283 is 38277886.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38277886 = 219138943.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68877283 is a prime.

It is a super-2 number, since 2×688772832 = 9488160226924178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68877287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172860 + ... + 173257.

It is an arithmetic number, because the mean of its divisors is an integer number (17305900).

Almost surely, 268877283 is an apocalyptic number.

68877283 is a deficient number, since it is larger than the sum of its proper divisors (346317).

68877283 is a wasteful number, since it uses less digits than its factorization.

68877283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346316.

The product of its digits is 903168, while the sum is 49.

The square root of 68877283 is about 8299.2338803049. The cubic root of 68877283 is about 409.9132931855.

The spelling of 68877283 in words is "sixty-eight million, eight hundred seventy-seven thousand, two hundred eighty-three".

Divisors: 1 199 346117 68877283