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67689362839 = 795310146809
BaseRepresentation
bin111111000010100110…
…011011010110010111
320110201101110220120111
4333002212123112113
52102111434102324
651032425543451
74614256043110
oct770246332627
9213641426514
1067689362839
112678597618a
1211151044b87
1364c9819927
1433c1bb9207
151b6283c794
hexfc299b597

67689362839 has 8 divisors (see below), whose sum is σ = 77440453920. Its totient is φ = 57958567296.

The previous prime is 67689362813. The next prime is 67689362849. The reversal of 67689362839 is 93826398676.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2k-67689362839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67689362849) 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, 5066734 + ... + 5080075.

It is an arithmetic number, because the mean of its divisors is an integer number (9680056740).

Almost surely, 267689362839 is an apocalyptic number.

67689362839 is a deficient number, since it is larger than the sum of its proper divisors (9751091081).

67689362839 is a wasteful number, since it uses less digits than its factorization.

67689362839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10147769.

The product of its digits is 141087744, while the sum is 67.

The spelling of 67689362839 in words is "sixty-seven billion, six hundred eighty-nine million, three hundred sixty-two thousand, eight hundred thirty-nine".

Divisors: 1 7 953 6671 10146809 71027663 9669908977 67689362839