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68764829 = 7291392437
BaseRepresentation
bin1000001100101…
…00010010011101
311210101121121112
410012110102131
5120100433304
610453511405
71463330360
oct406242235
9153347545
1068764829
11358a8041
121b042565
1311328563
1491c00d7
156084b6e
hex419449d

68764829 has 16 divisors (see below), whose sum is σ = 81916800. Its totient is φ = 56476224.

The previous prime is 68764811. The next prime is 68764853. The reversal of 68764829 is 92846786.

68764829 = T137 + T138 + ... + T745.

It is not a de Polignac number, because 68764829 - 28 = 68764573 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68764859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26999 + ... + 29435.

It is an arithmetic number, because the mean of its divisors is an integer number (5119800).

Almost surely, 268764829 is an apocalyptic number.

It is an amenable number.

68764829 is a deficient number, since it is larger than the sum of its proper divisors (13151971).

68764829 is a wasteful number, since it uses less digits than its factorization.

68764829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612.

The product of its digits is 1161216, while the sum is 50.

The square root of 68764829 is about 8292.4561500197. The cubic root of 68764829 is about 409.6900870377.

The spelling of 68764829 in words is "sixty-eight million, seven hundred sixty-four thousand, eight hundred twenty-nine".

Divisors: 1 7 29 139 203 973 2437 4031 17059 28217 70673 338743 494711 2371201 9823547 68764829