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68853419 = 177738747
BaseRepresentation
bin1000001101010…
…01111010101011
311210120010010122
410012221322223
5120111302134
610455433455
71464146555
oct406517253
9153503118
1068853419
1135958658
121b08588b
131135998b
1492044d5
1560a102e
hex41a9eab

68853419 has 4 divisors (see below), whose sum is σ = 68893944. Its totient is φ = 68812896.

The previous prime is 68853409. The next prime is 68853437. The reversal of 68853419 is 91435886.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68853419 - 216 = 68787883 is a prime.

It is a super-2 number, since 2×688534192 = 9481586615979122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68853419.

It is not an unprimeable number, because it can be changed into a prime (68853409) 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, 17597 + ... + 21150.

It is an arithmetic number, because the mean of its divisors is an integer number (17223486).

Almost surely, 268853419 is an apocalyptic number.

68853419 is a deficient number, since it is larger than the sum of its proper divisors (40525).

68853419 is a wasteful number, since it uses less digits than its factorization.

68853419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40524.

The product of its digits is 207360, while the sum is 44.

The square root of 68853419 is about 8297.7960326824. The cubic root of 68853419 is about 409.8659466566.

The spelling of 68853419 in words is "sixty-eight million, eight hundred fifty-three thousand, four hundred nineteen".

Divisors: 1 1777 38747 68853419