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68418843 = 3158314407
BaseRepresentation
bin1000001001111…
…11110100011011
311202202001000020
410010333310123
5120003400333
610442241523
71460356563
oct404776433
9152661006
1068418843
11356910a9
121aab62a3
1311236c2c
14912dda3
1560173b3
hex413fd1b

68418843 has 8 divisors (see below), whose sum is σ = 91289088. Its totient is φ = 45580584.

The previous prime is 68418827. The next prime is 68418851. The reversal of 68418843 is 34881486.

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

It is not a de Polignac number, because 68418843 - 24 = 68418827 is a prime.

It is a super-2 number, since 2×684188432 = 9362276154917298, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68418795 and 68418804.

It is not an unprimeable number, because it can be changed into a prime (68418043) 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, 2455 + ... + 11952.

It is an arithmetic number, because the mean of its divisors is an integer number (11411136).

Almost surely, 268418843 is an apocalyptic number.

68418843 is a deficient number, since it is larger than the sum of its proper divisors (22870245).

68418843 is a wasteful number, since it uses less digits than its factorization.

68418843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15993.

The product of its digits is 147456, while the sum is 42.

The square root of 68418843 is about 8271.5683518907. The cubic root of 68418843 is about 409.0018212786.

The spelling of 68418843 in words is "sixty-eight million, four hundred eighteen thousand, eight hundred forty-three".

Divisors: 1 3 1583 4749 14407 43221 22806281 68418843