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68698458 = 2323816581
BaseRepresentation
bin1000001100001…
…00000101011010
311210021020120100
410012010011122
5120041322313
610452240230
71462633023
oct406040532
9153236510
1068698458
1135862194
121b010076
131130429a
1491a3c4a
156070173
hex418415a

68698458 has 12 divisors (see below), whose sum is σ = 148846698. Its totient is φ = 22899480.

The previous prime is 68698453. The next prime is 68698459. The reversal of 68698458 is 85489686.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 61261929 + 7436529 = 7827^2 + 2727^2 .

It is not an unprimeable number, because it can be changed into a prime (68698451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1908273 + ... + 1908308.

Almost surely, 268698458 is an apocalyptic number.

68698458 is an abundant number, since it is smaller than the sum of its proper divisors (80148240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68698458 is a wasteful number, since it uses less digits than its factorization.

68698458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3816589 (or 3816586 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The square root of 68698458 is about 8288.4532935886. The cubic root of 68698458 is about 409.5582352652.

The spelling of 68698458 in words is "sixty-eight million, six hundred ninety-eight thousand, four hundred fifty-eight".

Divisors: 1 2 3 6 9 18 3816581 7633162 11449743 22899486 34349229 68698458